DTM CORP /TX/
424B3, 1997-05-05
SPECIAL INDUSTRY MACHINERY, NEC
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<PAGE>

                                                Filed pursuant to Rule 424(b)(3)
                                                              File No. 333-04173
 
[LOGO OF DTM CORPORATION       3,039,000 SHARES
     APPEARS HERE]
                                DTM CORPORATION
 
                                 COMMON STOCK
 
                               ----------------
 
  Of the 3,039,000 shares of DTM Corporation common stock (the "Common Stock")
offered hereby (the "Offering"), 2,852,191 shares are being sold by DTM
Corporation (the "Company" or "DTM") and 186,809 shares are being sold by the
selling shareholder identified in "Principal and Selling Shareholders" (the
"Selling Shareholder"). The Company will receive no proceeds from Common Stock
sold by the Selling Shareholder. Approximately $14.5 million of the proceeds
received by the Company will be used to retire existing indebtedness,
including $2.5 million of the $4.0 million of indebtedness owed to The
B.F.Goodrich Company ("BFGoodrich"), a shareholder of the Company.
Simultaneously with the closing of the Offering, BFGoodrich will convert the
other $1.5 million of indebtedness owed to it by the Company into 187,500
shares of newly issued Common Stock (the "BFGoodrich Debt Conversion").
 
  Prior to the Offering, there has been no public market for the Common Stock.
See "Underwriting" for information relating to factors considered in
determining the Offering price. The Common Stock has been approved for
quotation on the Nasdaq National Market, subject to notice of issuance, under
the symbol "DTMC."
 
  SEE "RISK FACTORS" BEGINNING AT PAGE 7 FOR A DISCUSSION OF CERTAIN FACTORS
THAT SHOULD BE CONSIDERED IN CONNECTION WITH AN INVESTMENT IN THE COMMON
STOCK.
 
                               ----------------
 
THESE  SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE  SECURITIES AND
 EXCHANGE  COMMISSION  OR  ANY  STATE   SECURITIES  COMMISSION  NOR  HAS  THE
  SECURITIES  AND EXCHANGE  COMMISSION  OR ANY  STATE SECURITIES  COMMISSION
   PASSED   UPON   THE   ACCURACY   OR   ADEQUACY   OF   THIS   PROSPECTUS.
    ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                   PROCEEDS TO
                              PRICE TO   UNDERWRITING PROCEEDS TO    SELLING
                               PUBLIC    DISCOUNT(1)  COMPANY(2)  SHAREHOLDER(2)
- --------------------------------------------------------------------------------
<S>                          <C>         <C>          <C>         <C>
Per Share..................  $      8.00  $      .56  $      7.44   $     7.44
- --------------------------------------------------------------------------------
Total(3)...................  $24,312,000  $1,701,840  $21,220,301   $1,389,859
</TABLE>
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
(1) The Company, BFGoodrich and the Selling Shareholder have agreed to
    indemnify the Underwriters against certain liabilities, including
    liabilities under the Securities Act of 1933, as amended. See
    "Underwriting."
(2) Before deducting expenses of the Offering to be paid by the Company and
    the Selling Shareholder, estimated at $437,000 and $31,000, respectively.
(3) BFGoodrich has granted the Underwriters a 30-day option to purchase up to
    303,900 additional shares of Common Stock solely to cover over-allotments,
    if any. If such option is exercised in full, the total Price to Public,
    Underwriting Discount, Proceeds to Company and Proceeds to Selling
    Shareholders (including BFGoodrich) will be $26,743,200, $1,872,024,
    $21,220,301 and $3,650,875, respectively. See "Underwriting."
 
                               ----------------
 
  The Common Stock is offered by the Underwriters, subject to prior sale,
when, as and if issued to and accepted by them and subject to certain
conditions. The Underwriters reserve the right to withdraw, cancel or modify
such offer and to reject orders, in whole or in part. It is expected that
delivery of the shares of Common Stock will be made on or about May 7, 1997.
 
A.G. EDWARDS & SONS, INC.                         LADENBURG THALMANN & CO. INC.
 
                  The date of this Prospectus is May 2, 1997.
<PAGE>
 
 
 
 
 
                                       2
<PAGE>
 
                               PROSPECTUS SUMMARY
 
  THE FOLLOWING SUMMARY SHOULD BE READ WITH AND IS QUALIFIED IN ITS ENTIRETY BY
THE MORE DETAILED INFORMATION AND FINANCIAL STATEMENTS AND NOTES THERETO
APPEARING ELSEWHERE IN THIS PROSPECTUS. INVESTORS SHOULD CAREFULLY CONSIDER THE
RISK FACTORS RELATED TO THE PURCHASE OF COMMON STOCK. SEE "RISK FACTORS."
UNLESS OTHERWISE INDICATED, THE INFORMATION CONTAINED IN THIS PROSPECTUS
ASSUMES THAT THERE HAS BEEN NO EXERCISE OF THE UNDERWRITERS' OVER-ALLOTMENT
OPTION AND REFLECTS AN EFFECTIVE 1.022-FOR-1 STOCK SPLIT EFFECTED AS A SERIES
OF RECAPITALIZATIONS COMPLETED IN APRIL 1997. SUCH STOCK SPLIT HAS BEEN
RETROACTIVELY APPLIED TO ALL SHARE AND PER SHARE AMOUNTS CONTAINED HEREIN.
UNLESS THE CONTEXT OTHERWISE REQUIRES, REFERENCES IN THIS PROSPECTUS TO "DTM"
AND THE "COMPANY" REFER TO DTM CORPORATION AND ITS SUBSIDIARY ON A CONSOLIDATED
BASIS. "DTM," "PROTOFORM," "RAPIDSTEEL," "RAPIDTOOL," "SANDFORM,"
"SINTERSTATION(R)," "SLS(R)" AND "TRUEFORM" ARE TRADEMARKS OR SERVICE MARKS OF
DTM CORPORATION. "SOMOS(R)" IS A TRADEMARK OF E.I. DUPONT DE NEMOURS AND
COMPANY ("DUPONT").
 
                                  THE COMPANY
 
  DTM Corporation develops, designs, manufactures, markets and supports, on an
international basis, rapid prototyping and rapid tooling systems, powdered
materials and related services. The Company's selective laser sintering systems
("Systems") and materials are based on proprietary and patented selective laser
sintering technology. Rapid prototyping is the creation of a solid three-
dimensional model, prototype or pattern directly from three-dimensional
computer aided design ("CAD") data. Rapid tooling is the creation of durable
tooling from CAD data that can be subsequently employed to produce substantial
quantities of parts for market introduction of a product. Use of the Company's
SLS Systems significantly reduces the time required to produce models and
prototypes for testing actual product fit and form, ergonomic design and
functionality from what otherwise could be months or weeks to days or, in some
cases, hours. The Company's SLS Systems are used to accelerate the design,
development and market introduction of products in a wide range of industries,
including but not limited to the automotive, aerospace, medical, electronics,
telecommunications, computer, appliance, footwear, toy and power tool
industries. The B.F. Goodrich Company currently owns approximately 92 percent
of the outstanding Common Stock.
 
  The Company has experienced substantial sales growth since the sale of its
first commercial SLS System, the Sinterstation 2000, in December 1992. Sales of
Sinterstation Systems, powdered materials and related services have increased
each year. As of December 31, 1996, the Company had sold 136 SLS Systems and
placed an additional two SLS Systems through a rental program resulting in a
total of 138 SLS Systems shipped worldwide. Revenue has increased from
approximately $1.1 million in 1991 to approximately $24.4 million in 1996, a
level that the Company believes makes it the second largest industry
participant as measured by revenues. The Company attributes its revenue growth
primarily to the increasing worldwide acceptance of rapid prototyping as a
technology capable of accelerating development and design of new products, as
well as the refinement of its selective laser sintering process to a level
which affords users distinct advantages over other rapid prototyping
technologies.
 
  The selective laser sintering rapid prototyping process employed by the
Company replicates a CAD model by using laser energy to convert heat-fusible
powders into three-dimensional solid objects within DTM's commercial SLS
Systems. A focused carbon dioxide laser beam melts and bonds ("sinters") the
surface of a bed of powder into a solid horizontal cross-section of the object
being modeled. Subsequent powder layers are deposited, sintered and bonded to
the previous layer as the energy from the laser beam fuses sequential layers
together. This layered manufacturing process is continued until the CAD model
has been fully replicated as a plastic part or metal tool insert. Upon
completion of the part build, the excess, or unsintered, plastic or metal
powder is removed for use in subsequent part builds. The Company either owns or
has exclusive licenses under various patents covering the technology utilized
in its SLS Systems and related products.
 
  DTM believes that its SLS Systems have distinct advantages relative to
competing rapid prototyping technologies. SLS Systems have the ability to (i)
process multiple powdered materials for a wide range of applications, (ii)
produce strong and durable functional plastic prototypes that can be drilled,
painted, equipped with electronics and mounted in working product assemblies
that duplicate the final product, (iii) rapidly produce prototype metal mold
inserts from metal powder, thereby significantly reducing the time required to
manufacture prototype tooling, (iv) build parts more quickly by sequencing and
stacking multiple parts in a single production run and (v) accommodate new
powdered plastic, metal and ceramic materials and expanded applications.
 
                                       3
<PAGE>
 
 
  Past purchasers of the Company's SLS Systems include The Boeing Company,
Eastman Kodak Company, Fiskars Oy, Ford Motor Company, General Motors
Corporation, Hughes Christensen, LG Electronics, Inc. (Goldstar), Mercedes-Benz
AG, Pratt & Whitney, Rockwell International Corporation, Samsung Electronics
Co., Ltd., Toyota Motor Corporation and Whirlpool Corporation, among others.
The Company also sells a substantial portion of its SLS Systems to service
bureaus, which are businesses that use rapid prototyping technology to
fabricate and sell models and prototype parts.
 
  DTM has devoted substantial effort to developing what it believes is a
leading position in the high end of the rapid prototyping industry and to
protecting its intellectual property rights. In the last two years, the Company
has introduced four new powdered sintering materials, a new tooling process and
a new Sinterstation System. The Company introduced ProtoForm powder in 1995,
which is specifically designed for the production of strong and durable
functional plastic prototypes. During 1995, the Company also introduced the
RapidTool process and RapidSteel powder, which allow customers who desire
multiple parts in their material of choice to directly create metal mold
inserts for injection mold tooling. The Company believes that, with the
introduction of its TrueForm powder in early 1996, it provides the most
effective solution for the rapid creation of patterns for investment casting.
Also in 1996 the Company introduced SandForm powder, a sand-based material that
enables foundries to create sand cores (without tooling) that can be used in
the sand casting of metal parts. The Company recently announced the expected
availability of two new powders: Somos 201 powder, a new material supplied by
DuPont that yields highly flexible parts with rubber-like characteristics, and
VeriForm powder, a significantly improved material for functional prototypes.
These developments continue to expand the potential end uses for rapid
prototyping from the original concept models to more functional plastic and
metal parts. The Company believes that its selective laser sintering technology
is the only commercially practiced rapid prototyping process that allows a user
to access all of these capabilities from a single platform. The Company
believes that it further expanded the potential end user market with the
September 1996 introduction of the Sinterstation 2500 System, a new
Sinterstation System with twice the build volume of the original System and
with a significantly higher scan speed.
 
  The Company believes that it is positioned to capitalize on its competitive
advantages and increase its share of the rapid prototyping market through the
following strategies: (i) using its ProtoForm powder to increase the Company's
SLS System and materials sales for strong durable part applications; (ii)
targeting the RapidTool process, the TrueForm powder, and the SandForm powder
to the growing rapid prototyping markets of metal prototype tools, investment
cast parts, and sand cast parts; (iii) developing and marketing new and
improved metal, plastic and ceramic powdered materials; (iv) continuing to
significantly upgrade the performance of the Sinterstation Systems in both
productivity and accuracy; and (v) expanding the Company's distribution
network, including the Company's direct sales force and agent network.
 
                                  THE OFFERING
 
<TABLE>
<S>                                <C>
Common Stock offered by the
 Company.......................... 2,852,191 Shares
Common Stock offered by the
 Selling Shareholder..............   186,809 Shares
Common Stock to be outstanding
 after the Offering............... 6,907,306 Shares(1)
Risk Factors...................... The Offering involves a high degree of risk
                                   and immediate and substantial dilution. See
                                   "Risk Factors" and "Dilution."
Use of Proceeds................... To retire existing indebtedness and for
                                   general corporate purposes. See "Use of
                                   Proceeds."
Nasdaq National Market symbol..... DTMC
</TABLE>
- --------
(1) Based upon the number of shares outstanding as of March 31, 1997. Includes
    (i) 187,500 shares of Common Stock to be issued to BFGoodrich
    simultaneously with the closing of the Offering upon conversion of $1.5
    million of indebtedness owed by the Company to BFGoodrich and (ii) 624,224
    shares of Common Stock issuable to employees upon the exercise of
    immediately exercisable stock options that will be outstanding in
    connection with the closing of the Offering under the DTM Corporation
    Equity Appreciation Plan. See "Management--Equity Appreciation Plan."
 
                                       4
<PAGE>
 
                      SUMMARY CONSOLIDATED FINANCIAL DATA
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                       YEAR ENDED DECEMBER 31,
                            --------------------------------------------------
                              1992      1993      1994      1995       1996
                            --------  --------  --------  --------  ----------
<S>                         <C>       <C>       <C>       <C>       <C>
STATEMENTS OF OPERATIONS
 DATA:
 Revenue:
 Products.................  $  2,841  $  6,989  $  8,127  $ 12,632  $   22,070
 Service and support(1)...     2,027     2,593     1,112     1,579       2,309
                            --------  --------  --------  --------  ----------
  Total revenue...........     4,868     9,582     9,239    14,211      24,379
 Cost of sales:
 Products.................     2,462     5,699     5,370     8,803      13,021
 Service and support......     1,705     2,141       511       873       1,424
                            --------  --------  --------  --------  ----------
  Total cost of sales.....     4,167     7,840     5,881     9,676      14,445
                            --------  --------  --------  --------  ----------
 Gross profit.............       701     1,742     3,358     4,535       9,934
 Operating loss...........    (9,624)   (9,644)   (5,731)   (5,606)     (4,338)
 Interest expense, net....       (10)     (328)     (178)     (530)     (1,066)
 Cost of discontinued
  registration............       --        --        --        --         (752)
 Income tax benefit
  allocated from
  BFGoodrich..............     3,032     3,084     1,825     2,138       1,667
 Net loss.................  $ (6,602) $ (6,650) $ (4,084) $ (3,998) $   (4,489)
                            ========  ========  ========  ========  ==========
Pro forma(2):
 Net loss.................                                          $   (6,156)
 Net loss per share(3)....                                          $    (1.71)
 Number of shares
  used(4).................                                           3,609,211
Pro forma, as adjusted for
 the Offering(2)(5):
 Net loss.................                                          $   (5,069)
 Net loss per share(3)....                                          $    (0.88)
 Number of shares
  used(4).................                                           5,760,476
</TABLE>
 
<TABLE>
<CAPTION>
                                                          DECEMBER 31, 1996
                                                      --------------------------
                                                      ACTUAL   AS ADJUSTED(4)(6)
                                                      -------  -----------------
<S>                                                   <C>      <C>
BALANCE SHEET DATA:
 Working capital..................................... $ 1,622       $ 8,864
 Total assets........................................  17,897        24,370
 Total debt..........................................  15,809           --
 Total liabilities...................................  26,382        10,573
 Shareholders' equity (deficit)......................  (8,485)       13,797
</TABLE>
- --------
(1) Includes domestic rapid prototyping service bureau activity through
    December 1993, at which time the Company sold its domestic service bureau.
    Revenues associated with the service bureau operations for the years ended
    December 31, 1992 and 1993 totaled approximately $1.9 million for each
    year.
(2) Computed on a stand-alone basis, without allocation of income tax benefit
    from BFGoodrich.
(3) See "Management's Discussion and Analysis of Financial Condition and
    Results of Operations--Impact of Recently Issued Accounting Standard" for
    the potential impact on earnings per share of future periods under
    Statement of Financial Accounting Standards No. 128, Earnings per Share.
(4) Gives effect to the issuance of an estimated 507,045 shares of Common Stock
    issuable to employees upon the exercise of immediately exercisable options,
    which will have exercise prices substantially less than the Offering price
    of $8.00 per share, that will be outstanding in connection with the closing
    of the Offering under the DTM Corporation Equity Appreciation Plan. See
    "Management--Equity Appreciation Plan."
(5) Gives effect to (i) that number of offered shares the net proceeds from
    which are necessary to fund debt repayments as described in "Use of
    Proceeds" and (ii) the elimination of historically incurred interest
    expense of approximately $1.1 million related to such debt.
(6) Reflects the sale of 2,852,191 shares of Common Stock by the Company at the
    Offering price of $8.00 per share, less the underwriting discount,
    estimated offering expenses and the application of the net proceeds to the
    Company therefrom. See "Use of Proceeds" and "Capitalization."
 
                                       5
<PAGE>
 
                      SUMMARY CONSOLIDATED OPERATING DATA
 
<TABLE>
<CAPTION>
                                                        YEAR ENDED DECEMBER 31,
                                                        ------------------------
                                                        1992 1993 1994 1995 1996
                                                        ---- ---- ---- ---- ----
<S>                                                     <C>  <C>  <C>  <C>  <C>
SLS Systems sold or rented(1)..........................   9   19   23   36   51
Cumulative SLS Systems sold or rented(1)...............   9   28   51   87  138
</TABLE>
- --------
(1) Includes the rental of four SLS Systems during the year ended December 31,
    1995. Two of such rental Systems were converted to sales during the year
    ended December 31, 1995.
 
                                 RECENT RESULTS
 
  Revenues for the first quarter of 1997 were $8.0 million compared to $5.8
million in the first quarter of 1996, which includes revenues from the sale of
17 (including one rental conversion) and 13 SLS Systems, respectively. Gross
profit for the first quarter of 1997 was $3.5 million compared to $2.3 million
in the first quarter of 1996 and, as a percentage of revenues, increased to 43%
in 1997 from 40% in 1996. Operating expenses for the first quarter of 1997 were
$4.1 million compared to $3.0 million in the first quarter of 1996, and were
approximately 51% of revenues for each quarter. The $1.1 million increase in
operating expenses was primarily due to increased selling, engineering and
research and development expenses. The Company incurred an operating loss of
$0.6 million for the first quarter of 1997 compared to $0.7 million in the
first quarter of 1996 and a net loss of $0.7 million in the first quarter of
1997 compared to a net loss of $0.6 million in the first quarter of 1996.
 
                                       6
<PAGE>
 
                                 RISK FACTORS
 
  In addition to the other information in this Prospectus, the following
factors should be considered carefully in evaluating the Company and its
business and prospects before purchasing any shares of Common Stock offered
hereby.
 
  LIMITED OPERATING HISTORY AND LACK OF PROFITABILITY. The Company was
incorporated in 1987, and prior to shipment of its first SLS Systems in 1992,
it derived revenues solely from a rapid prototyping service bureau that it
operated in Austin, Texas. The Company has been unprofitable from its
inception, most recently recognizing a net loss of approximately $4.5 million
for the year ended December 31, 1996 and $0.7 million in the first quarter of
1997. There can be no assurance that the Company can achieve or maintain
profitability in the future.
 
  LOSS TO RESULT FROM CONVERSION OF PHANTOM STOCK APPRECIATION RIGHTS. During
the quarter and year in which it becomes probable that the Offering will
occur, the Company will incur non-recurring, non-cash compensation expense as
a result of the conversion of phantom stock appreciation rights outstanding
under the DTM Corporation Equity Appreciation Plan (the "Equity Appreciation
Plan") into immediately exercisable options to acquire shares of Common Stock,
certain of which are at exercise prices substantially less than the Offering
price. Operating results for the quarter and year will be adversely affected
by such non-cash compensation expense of approximately $2.9 million, resulting
in a substantial reported net loss. See "Dilution," "Management--Equity
Appreciation Plan" and "Shares Eligible for Future Sale."
 
  MANAGEMENT OF GROWTH. DTM has experienced rapid sales growth since 1991,
recognizing increases in total net revenues from approximately $1.1 million in
1991 to approximately $24.4 million in 1996. This growth has, from time to
time, strained its management resources and systems. DTM's ability to manage
its growth effectively will depend on, among other things, its ability to
increase the capability and quality of its operational, financial and
management information systems and controls and to train, motivate and manage
a larger number of employees. There is no assurance that the Company will be
successful in managing any future growth. Failure to do so could have a
material adverse affect on the Company's business and financial performance.
 
  INTELLECTUAL PROPERTY AND PROPRIETARY RIGHTS. Protection of the Company's
intellectual property is an important factor in its ability to be successful
in a highly competitive market that is subject to rapid technological changes.
In pursuing protection for its proprietary rights in its SLS Systems,
materials and related technology, the Company currently relies on a
combination of patent, copyright, trademark and trade secret rights, as well
as contractual provisions. The Company typically seeks patent protection for
its selective laser sintering technology, including, where deemed appropriate,
the selective laser sintering process, the SLS Systems and the materials used
in the SLS Systems. However, patent protection may not always be available.
There can be no assurance that patents will be issued under any or all of the
patent applications to which the Company has rights. In addition, the laws of
various countries in which the Company's products may be sold may not protect
the Company's products and intellectual property rights to the same extent as
the laws of the United States.
 
  Furthermore, the Company can give no assurance that the issued patents to
which it holds rights will be adequate to protect its interests or, if
challenged, held valid. The Company's competitors could develop non-infringing
systems, materials or technologies that are equivalent or superior to those of
the Company. Competitors also may practice technology covered by DTM's patents
or other legal or contractual protection regardless of the fact that it is
legally protected, forcing the Company to engage in costly litigation to
defend its interests. The Company is currently engaged in patent infringement
litigation with a German competitor concerning the competitor's sale in Europe
of rapid prototyping systems that DTM believes infringe a European patent
under which DTM has exclusive rights. In response, this competitor has
instituted proceedings in the European Patent Office challenging the validity
of the patent in question. The Company has received a favorable initial ruling
from the European Patent Office. However, the opponent has filed papers with
the European Patent Office asserting new arguments that the patent is invalid.
DTM continues to defend its interest in this proceeding and has responded to
this new filing. DTM is also engaged in litigation in the United States
against two related companies and their president concerning those companies'
alleged infringement of a DTM patent. One of the parties has asserted claims
in this proceeding against DTM and BFGoodrich for violation of state and
federal antitrust laws, as well as patent misuse. DTM and BFGoodrich have
denied the latter allegations. While DTM
 
                                       7
<PAGE>
 
defends its intellectual property vigorously, there can be no assurance that
it will be successful in this litigation. If the Company were unsuccessful in
enforcing its intellectual property rights or other contractual rights in the
context of third-party offers to sell SLS Systems or powders or if the Company
were found to have violated state or federal antitrust laws, the Company's
future revenues might be adversely affected. The inability of the Company to
successfully establish and defend its intellectual property rights could have
a material adverse effect on the Company's business and financial performance.
See "Business--Intellectual Property" and "--Legal Proceedings."
 
  Unrelated third parties hold many patents and pending patent applications
under which the Company is not a licensee that relate to the design and
manufacture of rapid prototyping systems and materials. If such a third party
brought infringement litigation against the Company, and if the Company was
not successful in defending such litigation or in obtaining a license, the
Company's business and financial performance could be materially adversely
affected.
 
  Certain key intellectual property used in the selective laser sintering
process is licensed to the Company by The University of Texas System ("The
University of Texas"). As a licensee, the Company's rights to practice the
technology are not absolute. The University of Texas could terminate, attempt
to terminate or amend the license if the Company could be shown to be in
material default of the terms of the license. Even if DTM has a basis for
objection, defense of its rights as a licensee could be costly and the outcome
would be uncertain. Loss of significant rights as a licensee under this
license could have a material adverse effect on the Company's business and
financial performance. See "Business--Intellectual Property."
 
  QUARTERLY FLUCTUATIONS IN OPERATING RESULTS. The Company's revenues and
operating results have varied substantially from quarter to quarter and may
continue to do so. DTM typically experiences a relatively long lead time to
complete an SLS System sale and has historically experienced little or no
backlog. Furthermore, new product introductions, seasonality of customer
buying patterns and other factors can cause fluctuations in quarterly results.
These fluctuations may preclude the Company from managing its operating
results effectively from quarter to quarter. The failure of the Company to
complete a particular SLS System sale in any given quarter can have a material
adverse effect on the Company's business and financial performance for that
quarter and quarterly fluctuations could cause a material adverse effect on
the price at which the Common Stock trades. See "Management's Discussion and
Analysis of Financial Condition and Results of Operations--Selected Quarterly
Results" and "--Seasonality."
 
  CAPITAL RESOURCES. The Company's future capital requirements will depend on
a number of factors, including its profitability, growth rate, working capital
requirements associated with increased sales, expenses associated with
protection of its patents and other intellectual property and costs of future
research and development activities. BFGoodrich, the Company's majority
shareholder, has been a significant source of debt and equity funding in the
past. However, BFGoodrich has indicated to the Company that it believes there
will not be a need for it to provide funding in the future and that BFGoodrich
has no plans to provide such funding following completion of the Offering.
Future operating results will depend, in part, on the Company's ability to
obtain and manage capital sufficient to finance its business. The inability of
the Company to secure capital funding sufficient to meet its needs could have
a material adverse effect on the Company's business and financial performance.
 
  The Company has obtained a loan commitment letter from Texas Commerce Bank
for a revolving line of credit ("line of credit") contingent upon the
successful completion of the Offering, retirement of existing bank and
BFGoodrich indebtedness and negotiation and execution of mutually acceptable
definitive documentation. Assuming a line of credit is established with the
terms set forth in the commitment letter, the Company's ability to borrow
thereunder will be subject to a borrowing base calculation and the Company
meeting certain financial thresholds, including attaining certain levels of
"established profitability," as defined therein. Until achieving one such
level, the Company would be permitted to borrow up to $3.0 million;
thereafter, available advances against eligible receivables would be increased
up to a maximum of $6.0 million. Loans under the line of credit would mature
within one year, would be collateralized by the Company's accounts receivable
and inventory and would bear interest at the bank's prime interest rate plus
three quarters of one percent. The
 
                                       8
<PAGE>
 
commitment provides that the Company would be bound by customary covenants,
including restrictions on additional liens or borrowings, as well as the
payment of dividends, and affirmative reporting requirements. In addition, the
terms of the commitment letter specify that the bank would have the option to
terminate the obligation to make further advances under the line of credit on
30 days notice if employment of the chief executive officer of the Company
terminates and a qualified successor is not appointed by the Company and
approved by Texas Commerce Bank within a specified period of time. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."
 
  NEW PRODUCTS; ENGINEERING TESTING DELAYS. The Company's ability to achieve
and maintain a significant market share may depend heavily on its ability to
improve its existing products, as well as to introduce new and innovative
products that facilitate increased use and more specialized applications of
existing products. DTM cannot predict with any certainty the degree to which
its ongoing research and development efforts in the areas of SLS System and
materials enhancements will be successful or, if so, when. In addition, the
Company can provide no assurance of its future success in selecting,
developing, manufacturing and marketing new products. When the Company or its
competitors announce new products with capabilities or technologies that have
the potential to replace the Company's existing product offerings, customers
may defer or forego purchases of existing Company products. This could
materially adversely affect the Company's business and financial performance.
While the Company performs extensive testing prior to releasing new product
designs or product enhancements, products may contain unforeseen errors or
performance problems. The correction of errors and problems in new products
could cause delays in product introductions or shipments, require design
modifications to previously shipped products or cause adverse publicity, any
of which could adversely affect the Company's business and financial
performance.
 
  DEPENDENCE ON KEY PERSONNEL. The Company's success depends to a substantial
extent on certain key employees, particularly John S. Murchison, III, its
President and Chief Executive Officer. Losing the services of one or more key
employees could have a material adverse effect on the Company's business and
financial performance. The Company's success also depends on its ability to
continue to attract highly talented technical personnel. Candidates with
appropriate training and expertise may be in short supply in the geographic
areas where the Company is attempting to recruit personnel. While the Company
has put in place incentive compensation plans intended to provide motivation
for continued employment of key employees, none of the employees is a party to
an employment or noncompetition agreement with the Company and the Company can
give no assurance that it will retain these employees or continue to attract,
assimilate and retain other skilled personnel. See "Management."
 
  COMPETITION. The market for rapid prototyping systems is highly competitive.
In marketing its SLS Systems, the Company experiences competition from many
sources. Certain of the Company's competitors may be better known and may have
greater financial, research and development, production and marketing
resources than DTM. Competition could increase as a result of the introduction
of new products or product enhancements by these competitors or the entry into
the industry by other companies. Increased competition could result in price
reductions, reduced margins and loss of market share, all of which could
materially adversely affect the Company's business and financial results. See
"Business--Competition."
 
  EMERGING RAPID PROTOTYPING MARKET. The market for rapid prototyping products
and services is in an early stage of development and includes multiple,
competing technologies, many of which are not yet fully developed.
Participants in this market are moving to address new applications, many of
which may not yet be known or accepted by potential users. Significant
education of the end user in both CAD modeling and rapid prototyping in
general may be a prerequisite to product acceptance. It is not clear at this
time which one or more technologies will gain broad market acceptance. There
can be no assurance that DTM will emerge as a market leader, or even a major
market participant, as the market matures.
 
  DEPENDENCE ON THIRD-PARTY SUPPLIERS. The Company subcontracts for
manufacture of SLS System components, powdered sintering materials and
accessories from single-source, third-party suppliers. A disruption in supply
or failure of a supplier to remain competitive in functionality or price could
have a material adverse effect on the Company's sales or reputation for timely
delivery, and, hence, on the Company's business and financial performance. See
"Business--Manufacturing."
 
 
                                       9
<PAGE>
 
  INTERNATIONAL OPERATIONS. For 1995 and 1996, 33.5% and 50.0%, respectively,
of the Company's revenues were derived from sales of its products and services
in geographical areas outside of the United States. The only foreign country
that accounted for more than 10% of the Company's sales during either 1995 or
1996 was Germany, which accounted for 12.0% of the Company's 1995 revenues
(declining to 9.6% of the Company's revenues in 1996). The Company expects
that sales to customers in countries outside of the United States will
continue to make up a significant percentage of total sales. Fluctuations in
exchange rates as well as interest rates could significantly affect DTM's
sales in foreign markets. In particular, a strengthening dollar may adversely
affect the price competitiveness or revenues realized on DTM's sales of
products and services. In addition, exchange rates could adversely affect the
value of receivables arising from foreign sales. The Company does not
currently engage in any hedging to limit the currency exchange risk related to
these sales. The regulatory environment, including import/export laws and
protective trade policies of foreign governments, also could materially
adversely affect the Company's business and financial performance. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."
 
  CONTROL OF THE COMPANY. Following the completion of the Offering and the
BFGoodrich Debt Conversion, and prior to the exercise of any of the options
that will be outstanding in connection with the closing of the Offering under
the DTM Corporation Equity Appreciation Plan and any exercise of the over-
allotment option, BFGoodrich will own approximately 50 percent of the
outstanding Common Stock. At this percentage, BFGoodrich will be able to
control the election of the Company's board of directors (the "Board of
Directors") and the outcome of matters submitted to the Company's shareholders
for their vote or consent. In addition, BFGoodrich has indicated that its
interest in DTM is primarily financial and that, if market conditions are
favorable, it may divest its interest in the Company over a period of time,
most probably in future registered offerings of the Common Stock, but possibly
also in one or more private transactions. The Company cannot predict the
effect of a private sale of a controlling interest in the Company, although,
depending on the identity of the purchaser and its reason for acquiring
control of the Company, minority shareholders could be adversely affected.
 
  LOSS OF TAX ALLOCATION AGREEMENT AND OTHER BENEFITS FROM BFGOODRICH. As a
result of the Offering described herein, the ownership of outstanding Common
Stock by BFGoodrich will decrease to less than 80 percent. Effective as of the
date that such decrease occurs, BFGoodrich will no longer be able to include
DTM's income or loss in BFGoodrich's consolidated federal income tax return;
consequently, DTM will lose the benefit of the tax allocation agreement
between DTM and BFGoodrich. Under that agreement, BFGoodrich credits to the
Company the amount of any benefits realized by BFGoodrich as a result of the
inclusion of DTM's losses and/or tax credits in BFGoodrich's consolidated
federal income tax return. Without the tax benefit allocated from BFGoodrich,
the Company's net loss for 1996 would have increased from approximately $4.5
million to approximately $6.2 million. To the extent the Company incurs future
losses after the tax allocation agreement is no longer in effect, the
application of the resulting tax loss carryforwards would be deferred until
sufficient income is generated to utilize the carryforwards.
 
  In addition, BFGoodrich currently provides DTM tax administration services,
participation in a group program for various types of insurance and certain
other assistance, including legal services. These arrangements are provided
either at no cost to the Company or on terms that could be considered more
favorable to the Company than those that would be available to DTM in arms-
length transactions with unrelated vendors, principally because DTM is able to
take advantage of cost efficiencies experienced by BFGoodrich due to the size
of its operations. The Company expects that it will continue to participate in
many of these arrangements after the Offering, until such time as BFGoodrich
no longer owns a significant interest in the Company. However, DTM may be
ineligible to take part in some insurance programs and certain other
arrangements once BFGoodrich no longer owns a majority of the outstanding
Common Stock. Either party has the option to terminate any of such
arrangements at any time. See "Management's Discussion and Analysis of
Financial Condition and Results of Operations" and "Certain Transactions--
Certain Arrangements with BFGoodrich."
 
  MANAGEMENT DISCRETION IN USE OF PROCEEDS. As of the date of this Prospectus,
the Company has not allocated the remaining $6.3 million of the net proceeds
from the Offering after repayment of debt to any specific use other than for
general corporate purposes, including the funding of working capital
requirements. See "Use of Proceeds." An investment under such circumstances
entails a higher degree of risk than an investment under circumstances in
which a company has specifically identified uses of proceeds, because
investors have no
 
                                      10
<PAGE>
 
opportunity to assess such uses. Accordingly, investors will be reliant on the
discretion afforded management in the use of a substantial portion of the net
proceeds of the Offering.
 
  POSSIBLE ISSUANCE OF PREFERRED STOCK. The Company's Articles of
Incorporation authorize the issuance of up to 3,000,000 shares of preferred
stock, $.001 par value (the "Preferred Stock"), the terms of which would be
determined by the Board of Directors at the time of issuance, without further
shareholder approval. The Board of Directors would determine whether these
shares would carry voting rights, preferences in the payment of dividends,
sinking fund provisions and liquidation, redemption or conversion rights, if
any. The Company has no current plans to issue Preferred Stock. However, if
such stock is issued in the future, the rights of the holders of Common Stock
could be materially adversely affected. It is possible that the Board of
Directors could grant future holders of Preferred Stock rights that could
restrict the Company's ability to merge or sell its assets to a third party,
resulting in preservation of the control of the Company by its then current
owners. The Preferred Stock provisions of the Company's Articles of
Incorporation could inhibit a third party from acquiring a significant amount
of the Common Stock, thereby delaying or preventing changes of the management
or control of the Company, and possibly materially adversely affecting the
Common Stock price as a result. See "Description of Capital Stock."
 
  SHARES ELIGIBLE FOR FUTURE SALE. As of March 31, 1997, shareholders held a
total of 3,243,391 shares of Common Stock, including 2,969,691 shares of
Common Stock held by BFGoodrich. All holders of outstanding shares of Common
Stock have signed agreements ("lock-up agreements") under which they have
agreed not to sell any shares of Common Stock (other than shares offered
pursuant to this Prospectus) for a period of 180 days from the date of this
Prospectus without the prior written consent of the Representatives of the
Underwriters. After expiration of the lock-up agreements, shares of Common
Stock may become eligible for sale in the public market, subject to the volume
limitations under Rule 144 of the Securities Act of 1933, as amended (the
"Securities Act"). Of the holders of Common Stock, only affiliates of the
Company will be affected by the volume limitations of Rule 144. All shares of
Common Stock owned by BFGoodrich, including the 187,500 shares issued to it
pursuant to the BFGoodrich Debt Conversion, will, upon expiration of the lock-
up agreements, be freely tradeable, subject to certain provisions of Rule 144.
In addition, BFGoodrich will have rights to require the Company to register
sales of its shares of Common Stock under the Securities Act in certain
circumstances.
 
  In connection with the closing of the Offering, DTM employees will hold
immediately exercisable options to purchase an estimated 624,224 shares of
Common Stock under the Equity Appreciation Plan, of which 507,045 shares will
be at prices substantially less than the Offering price of $8.00 per share.
See "Management--Equity Appreciation Plan." The Company intends to register
the issuance and the sale of the shares of Common Stock issuable on exercise
of options under the Equity Appreciation Plan on a Form S-8 Registration
Statement concurrently with the Offering described herein. As a result, the
Common Stock acquired by employees of DTM upon exercise of options outstanding
under the Equity Appreciation Plan will be freely tradeable (subject to
compliance with certain provisions of Rule 144, in the case of affiliates of
the Company). However, all employees of the Company have signed lock-up
agreements under which they have agreed not to sell any shares of Common
Stock, including shares issuable upon the exercise of options under the Equity
Appreciation Plan, for a period of 180 days from the date of this Prospectus,
without the prior written consent of the Representatives of the Underwriters.
 
  Sales of shares of Common Stock into the market by current shareholders or
employees exercising options could cause a decline in the price of such stock.
See "Management," "Shares Eligible for Future Sale" and "Underwriting."
 
  LACK OF PRIOR PUBLIC MARKETS; VOLATILITY. Prior to the Offering, the Common
Stock was held by a small number of investors and was not traded on any public
market. There can be no assurance of active trading in the Common Stock after
the Offering is completed. The Offering price of the Common Stock was
determined by negotiations among the Company and the Underwriters and may not
be indicative of the market price for shares of the Common Stock after the
Offering. See "Underwriting." The Company has applied for quotation of the
Common Stock on the Nasdaq National Market. Historically, the stock market has
experienced volatility that has particularly affected the market price of
common stock of technology-related companies. That volatility sometimes has
been unrelated to the operating performance of such companies.
 
  DILUTION. Purchasers of shares of Common Stock offered hereby will suffer
immediate and substantial dilution of $6.04 per share after the Offering and
the issuance of the EAP shares. See "Dilution."
 
                                      11
<PAGE>
 
                                  THE COMPANY
 
  DTM Corporation was incorporated in Texas in 1987 for the purpose of
licensing and commercializing the selective laser sintering technology
developed and patented by The University of Texas. DTM has acquired an
exclusive worldwide license to the selective laser sintering technology from
The University of Texas, which includes the original patents, plus a right of
first refusal to all improvements thereon. The Company has nine shareholders,
including BFGoodrich, which owns approximately 92 percent of the outstanding
Common Stock, DTM Holdings, Ltd. and The University of Texas. See "Principal
and Selling Shareholders."
 
  In 1992, the Company began commercial sales of the Sinterstation System.
Prior to that time, the Company's revenues were generated solely from
operating a service bureau in Austin, Texas. Materials that have been
introduced for use in the Company's SLS Systems include: a polycarbonate
powder; two nylon powders; ProtoForm powder, a composite nylon powder;
RapidSteel powder, a metal powder used for the production of prototype mold
inserts; TrueForm powder, a polymer-based material that the Company believes
will be extensively used to produce patterns for soft tooling and investment
casting; and SandForm powder, a sand powder used for the production of sand
molds and cores. The Company recently announced the expected availability of
two new powders: Somos 201 powder, a new material supplied by DuPont that
yields highly flexible parts with rubber-like characteristics, and VeriForm
powder, a significantly improved material for functional prototypes.
 
  The Company's executive offices are located at 1611 Headway Circle, Building
2, Austin, Texas 78754-5199, and its telephone number is (512) 339-2922.
 
                                USE OF PROCEEDS
 
  The net proceeds to be received by the Company from the sale of the Common
Stock offered hereby are estimated to be approximately $20.8 million. Of the
net proceeds to the Company, $11.8 million will be used to repay the Company's
bank debt, $2.5 million will be used to repay borrowings from BFGoodrich and
$0.2 million will be used to repay other short-term borrowings. The Company
intends to use the remaining net proceeds of approximately $6.3 million for
general corporate purposes, including the funding of working capital
requirements. The weighted average interest rate on the debt to be retired
with the proceeds of the Offering as of March 31, 1997 was 6.3 percent per
annum for the bank debt, 8.5 percent per annum for the borrowings from
BFGoodrich and 18.6 percent per annum for the short-term borrowings. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Liquidity and Capital Resources" and "Certain Transactions--
Outstanding Lines of Credit; Financing Transactions." Pending their use as set
forth above, the net proceeds to the Company from the Offering will be
invested in deposits with banks, investment grade securities and short-term
income-producing investments, including government obligations and other money
market instruments.
 
                                DIVIDEND POLICY
 
  The Company has never paid any dividends on the Common Stock and does not
anticipate that it will pay dividends in the foreseeable future. The Company
intends to reinvest any earnings in the development and expansion of its
business. Any future determinations to pay cash dividends will be at the
discretion of the Board of Directors and will depend upon the Company's
earnings, capital requirements, financial condition, credit and loan covenants
at that time, as well as any other factors deemed relevant by the Board of
Directors. Furthermore, the Company expects that it will be subject to
restrictions on paying dividends pursuant to the terms of a line of credit
that it expects to establish pursuant to a commitment letter from Texas
Commerce Bank. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations--Liquidity and Capital Resources."
 
                                      12
<PAGE>
 
                                CAPITALIZATION
 
  The following table sets forth the capitalization of the Company and its
consolidated subsidiary at December 31, 1996: (i) on an actual basis; (ii) on
an as adjusted basis to reflect the estimated accounting impact of the
conversion, in connection with the Offering, of all phantom stock appreciation
rights ("SARs") outstanding under the Equity Appreciation Plan into
immediately exercisable options to acquire shares of Common Stock ("EAP
Options"); and (iii) on an as adjusted basis to reflect item (ii), the
BFGoodrich Debt Conversion and the sale of 2,852,191 shares of Common Stock by
the Company in the Offering (after deducting the underwriting discount and
estimated Offering expenses to be paid by the Company, totaling $2,035,000)
and the application of the estimated net proceeds therefrom. See "Management--
Equity Appreciation Plan" and "Management's Discussion and Analysis of
Financial Condition and Results of Operations."
 
<TABLE>
<CAPTION>
                                             DECEMBER 31, 1996
                          ---------------------------------------------------------
                                                      AS ADJUSTED
                                    -----------------------------------------------
                                                          FOR THE OFFERING, THE BFG
                                                             DEBT CONVERSION AND
                                    FOR CONVERSION OF THE     CONVERSION OF THE
                           ACTUAL   SARS INTO EAP OPTIONS   SARS INTO EAP OPTIONS
                          --------  --------------------- -------------------------
                                           (DOLLARS IN THOUSANDS)
<S>                       <C>       <C>                   <C>
SHORT-TERM BORROWINGS...  $    769        $    769                $    --
                          ========        ========                ========
BORROWINGS UNDER LINE OF
 CREDIT FROM
 BFGOODRICH.............  $  4,000        $  4,000                $    --
                          ========        ========                ========
NOTES PAYABLE TO BANKS..  $ 11,040        $ 11,040                $    --
                          ========        ========                ========
SHAREHOLDERS' EQUITY
 (DEFICIT):
  Preferred Stock, $.001
   par value:
   3,000,000 shares
   authorized, no shares
   issued and
   outstanding..........  $    --         $    --                 $    --
  Common Stock, $.0002
   par value:
   60,000,000 shares
   authorized; 3,243,391
   actual shares issued
   and outstanding;
   6,283,082 shares
   issued and
   outstanding as
   adjusted for the
   Offering and the
   BFGoodrich Debt
   Conversion(1)........         1               1                       1
  Additional paid-in
   capital..............    28,019          30,945                  53,227
  Accumulated deficit...   (36,469)        (39,395)                (39,395)
  Cumulative translation
   adjustment...........       (36)            (36)                    (36)
                          --------        --------                --------
Total shareholders' eq-
 uity (deficit).........  $ (8,485)       $ (8,485)               $ 13,797
                          ========        ========                ========
</TABLE>
- --------
(1) Includes the sale of 2,852,191 shares in the Offering and the issuance of
    187,500 shares of Common Stock pursuant to the BFGoodrich Debt Conversion
    and excludes the 624,224 shares of Common Stock that will be issuable upon
    exercise of EAP Options. See "Management--Equity Appreciation Plan" and
    "Underwriting."
 
                                      13
<PAGE>
 
                                   DILUTION
 
  As of December 31, 1996, the Company had a net tangible book value (deficit)
of $(10,123,679), or $(3.12) per outstanding share of Common Stock. Net
tangible book value (deficit) represents the amount of total tangible assets
less total liabilities. Adjusting such net tangible book value (deficit) per
share to give effect to the sale by the Company of 2,852,191 shares of Common
Stock in the Offering (after deducting the underwriting discount and estimated
Offering expenses to be paid by the Company, totaling $2,035,000) and the
simultaneous issuance of 187,500 shares of Common Stock upon conversion of
$1,500,000 of indebtedness owed by the Company to BFGoodrich, the Company's
net tangible book value as adjusted for the Offering and the BFGoodrich Debt
Conversion at December 31, 1996 would have been $12,158,849, or $1.94 per
share of Common Stock. This constitutes an immediate increase in net tangible
book value of $5.06 per share to existing shareholders and immediate dilution
of $6.06 per share to new investors purchasing shares in the Offering.
 
  After giving further effect to the issuance, for cash consideration of
$1,130,710, of 507,045 shares of Common Stock (the "EAP Shares") to be
issuable upon exercise of certain immediately exercisable EAP Options having
exercise prices substantially less than the Offering price of $8.00 per share,
the net tangible book value per share as adjusted for the Offering, the
BFGoodrich Debt Conversion and the issuance of EAP shares would have been
$1.96 per share. This constitutes an immediate increase in net tangible book
value of $0.02 per share to existing shareholders and new investors and
results in a cumulative immediate dilution of $6.04 per share to new investors
purchasing shares in the Offering.
 
<TABLE>
   <S>                                                             <C>     <C>
   Offering price per share to new investors.....................          $8.00
                                                                           =====
     Net tangible book value (deficit) per share as of December
      31, 1996...................................................  $(3.12)
     Increase per share attributable to new investors and the
      BFGoodrich Debt Conversion.................................    5.06
                                                                   ------
     Net tangible book value per share as adjusted for the
      Offering and the BFGoodrich Debt Conversion................    1.94
   Dilution per share to new investors after the Offering and the
    BFGoodrich Debt Conversion...................................          $6.06
                                                                           =====
     Adjustment to reflect assumed issuance of EAP Shares........    0.02
                                                                   ------
   Pro forma net tangible book value per share as adjusted for
    the Offering and BFGoodrich Debt Conversion and the assumed
    issuance of EAP Shares.......................................  $ 1.96
                                                                   ======
   Dilution per share to new investors after the Offering, the
    BFGoodrich Debt Conversion and the assumed issuance of the
    EAP Shares...................................................          $6.04
                                                                           =====
</TABLE>
  The following table summarizes, on a pro forma basis as of December 31,
1996, the differences in the total consideration and the average price per
share of Common Stock paid or contributed by existing shareholders and to be
paid by purchasers of Common Stock from the Company in the Offering (and by
BFGoodrich pursuant to the BFGoodrich Debt Conversion) at the Offering price
of $8.00 per share. For purposes of the table, the EAP Shares are assumed to
have been issued on December 31, 1996.
<TABLE>
<CAPTION>
                                SHARES PURCHASED  TOTAL CONSIDERATION  AVERAGE
                                ----------------- -------------------   PRICE
                                 NUMBER   PERCENT   AMOUNT    PERCENT PER SHARE
                                --------- ------- ----------- ------- ---------
<S>                             <C>       <C>     <C>         <C>     <C>
Existing shareholders(1)(2).... 3,243,391   47.8% $28,020,033   52.4%   $8.64
                                                                        =====
EAP shareholders(3)............   507,045    7.5    1,130,710    2.1    $2.23
                                ---------  -----  -----------  -----    =====
                                3,750,436   55.2   29,150,743   54.5    $7.77
                                                                        =====
New investors and BFGoodrich
 (pursuant to the BFGoodrich
 Debt Conversion)(2)(4)........ 3,039,691   44.8   24,317,528   45.5    $8.00
                                ---------  -----  -----------  -----    =====
  Total........................ 6,790,127  100.0% $53,468,271  100.0%   $7.87
                                =========  =====  ===========  =====    =====
</TABLE>
- --------
(1) Total consideration for existing shareholders is the Company's recorded
    amounts for Common Stock and additional paid-in capital.
(2) Sales by the Selling Shareholder in the Offering will reduce the number of
    shares held by existing shareholders to 3,056,582 shares or 48.6% of the
    total number of shares of Common Stock outstanding after the Offering and
    the BFGoodrich Debt Conversion (or 44.3% assuming the exercise of the
    624,224 EAP Options), and will increase the number of shares held by new
    investors to 3,039,000 or 48.4% of the total number of shares of Common
    Stock outstanding after the Offering and the BFGoodrich Debt Conversion
    (or 44.0% assuming the exercise of the 624,224 EAP Options). See
    "Principal and Selling Shareholders."
(3) Gives effect to the issuance of Common Stock issuable to employees upon
    the exercise of certain immediately exercisable EAP Options having
    exercise prices substantially less than the Offering price of $8.00 per
    share.
(4) Total consideration is not reduced by the underwriting discount and
    estimated Offering expenses to be paid by the Company, totaling
    $2,035,000.
 
                                      14
<PAGE>
 
                     SELECTED CONSOLIDATED FINANCIAL DATA
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
  The following selected financial data for the five years ended December 31,
1996 is derived from audited consolidated financial statements of the Company.
The data should be read in conjunction with the consolidated financial
statements, related notes and other financial information included herein.
 
<TABLE>
<CAPTION>
                                         YEAR ENDED DECEMBER 31,
                              -------------------------------------------------
                                1992      1993      1994      1995      1996
                              --------  --------  --------  --------  ---------
<S>                           <C>       <C>       <C>       <C>       <C>
STATEMENTS OF OPERATIONS
 DATA:
 Revenue:
 Products...................  $  2,841  $  6,989  $  8,127  $ 12,632  $  22,070
 Service and support(1).....     2,027     2,593     1,112     1,579      2,309
                              --------  --------  --------  --------  ---------
  Total revenue.............     4,868     9,582     9,239    14,211     24,379
 Cost of sales:
 Products...................     2,462     5,699     5,370     8,803     13,021
 Service and support........     1,705     2,141       511       873      1,424
                              --------  --------  --------  --------  ---------
  Total cost of sales.......     4,167     7,840     5,881     9,676     14,445
                              --------  --------  --------  --------  ---------
 Gross profit...............       701     1,742     3,358     4,535      9,934
 Operating expenses:
 Selling, general and
  administrative............     4,948     5,588     5,249     6,620      9,980
 Research and development...     5,377     5,798     3,840     3,521      4,292
                              --------  --------  --------  --------  ---------
  Total operating expenses..    10,325    11,386     9,089    10,141     14,272
 Operating loss.............    (9,624)   (9,644)   (5,731)   (5,606)    (4,338)
 Other income (expense):
 Gain on sale of service
  bureau....................       --        238       --        --         --
 Interest expense, net......       (10)     (328)     (178)     (530)    (1,066)
 Cost of discontinued
  registration..............       --        --        --        --        (752)
                              --------  --------  --------  --------  ---------
  Total other income
   (expense)................       (10)      (90)     (178)     (530)    (1,818)
                              --------  --------  --------  --------  ---------
 Loss before income tax
  benefit allocated
  from BFGoodrich...........    (9,634)   (9,734)   (5,909)   (6,136)    (6,156)
 Income tax benefit
  allocated from
  BFGoodrich................     3,032     3,084     1,825     2,138      1,667
                              --------  --------  --------  --------  ---------
 Net loss...................  $ (6,602) $ (6,650) $ (4,084) $ (3,998) $  (4,489)
                              ========  ========  ========  ========  =========
Pro forma(2):
 Net loss...................                                          $  (6,156)
 Net loss per share(3)......                                          $   (1.71)
 Number of shares used(4)...                                          3,609,211
Pro forma, as adjusted for
 the Offering and the
 BFGoodrich Debt Conver-
 sion(2)(5):
 Net loss...................                                          $  (5,069)
 Net loss per share(3)......                                          $   (0.88)
 Number of shares used(4)...                                          5,760,476
BALANCE SHEET DATA (AT
 PERIOD END):
 Working capital (deficit)..  $ (2,808) $  1,818  $    342  $    236      1,622
 Total assets...............    10,010    12,384     8,560    10,639     17,897
 Total debt.................     4,425     3,000     4,600     9,076     15,809
 Total liabilities..........     6,965     8,306     8,516    14,557     26,382
 Shareholders' equity
  (deficit).................     3,045     4,078        44    (3,918)    (8,485)
</TABLE>
- --------
(1) Includes domestic rapid prototyping service bureau activity through
    December 1993, at which time the Company sold its domestic service bureau.
    Revenues associated with the service bureau operations for the years ended
    December 31, 1992 and 1993 totaled approximately $1.9 million for each
    year.
(2) Computed on a stand-alone basis, without allocation of income tax benefit
    from BFGoodrich.
(3) See "Management's Discussion and Analysis of Financial Condition and
    Results of Operations--Impact of Recently Issued Accounting Standard" for
    the potential impact on earnings per share of future periods under
    Statement of Financial Accounting Standards No. 128, Earnings per Share.
(4) Gives effect to the issuance of an estimated 507,045 shares of Common
    Stock to be issuable to employees upon the exercise of immediately
    exercisable EAP Options having exercise prices substantially less than the
    Offering price of $8.00 per share. See "Management's Discussion and
    Analysis of Financial Condition and Results of Operations" and
    "Management--Equity Appreciation Plan."
(5) Gives effect to (i) that number of offered shares the net proceeds from
    which are necessary to fund debt repayments as described in "Use of
    Proceeds" and (ii) the elimination of historically incurred interest
    expense of approximately $1.1 million related to such debt.
 
                                      15
<PAGE>
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
  The following discussion and analysis should be read in conjunction with the
Company's Consolidated Financial Statements and the Notes thereto appearing
elsewhere in this Prospectus.
 
OVERVIEW
 
  DTM Corporation develops, designs, manufactures, markets and supports, on an
international basis, rapid prototyping and rapid tooling systems, powdered
materials and related services. The Company's SLS Systems and materials are
based on proprietary and patented selective laser sintering technology. The
Company was incorporated in 1987, and prior to shipment of its first SLS
System in 1992, it derived revenues solely from a service bureau it operated
in Austin, Texas.
 
  Revenues are generated by product sales and service and support activities.
Product revenues include sales of SLS Systems, related powdered materials and,
beginning in 1995, upgrades and rentals of SLS Systems. Service and support
activities include maintenance, warranty service, customer training and,
through 1993, the operation of a service bureau. When an SLS System is sold,
between 94 and 97 percent of the sales price is immediately recognized as
product revenue, with the remainder deferred and recognized ratably over the
System's 12-month warranty period as service and support revenue. Revenue
related to annual maintenance contracts is also deferred and recognized
ratably over the support period.
 
  Over the past three years, an element of the Company's business strategy has
been to increase its recurring sources of revenue, primarily through sales of
materials, maintenance services, SLS System upgrades and other supporting
products and accessories to users of SLS Systems. The Company expects to
continue this strategy. In 1996, sales of materials, spare parts, services and
upgrades represented approximately 33 percent of total revenues. The Company
anticipates that materials sales, in particular, will continue to represent a
significant portion of future revenues as its installed base of SLS Systems
increases.
 
  As more fully described herein, the Company has historically experienced
significant fluctuations in its gross margins. Such fluctuations were impacted
by, among other factors, the trade-in of pre-commercial SLS Systems for
commercial SLS Systems, the resale of such pre-commercial SLS Systems and two
sales of internally utilized SLS Systems with substantially depreciated net
book value. Specifically, in 1994, the Company's gross margin was positively
impacted by the sale of two SLS Systems that were carried at no cost. The
Company's gross margins improved during 1996, as the average SLS System price
has increased, in part, due to the introduction of several new powders and the
introduction of the new Sinterstation 2500 System. Gross margin for the year
ended December 31, 1996 increased to 40.7% from 31.9% in 1995 and for the
three months ended December 31, 1996, gross margin increased to 41.1% from
38.0% for the same period in 1995.
 
  The Company's operating results have varied substantially from year to year
and quarter to quarter. A sale by the Company of one of its SLS Systems can be
material to the operating results for any one quarter. Furthermore, new
product introductions, seasonality of customer buying patterns and other
factors can cause fluctuations in operating results.
 
                                      16
<PAGE>
 
RESULTS OF OPERATIONS
 
  The following table sets forth for the periods indicated certain income
statement data as a percentage of total revenues and certain cost of sales
data as a percentage of respective product revenues and service and support
revenues.
 
<TABLE>
<CAPTION>
                                                 YEAR ENDED DECEMBER 31,
                                                 ---------------------------
                                                  1994      1995      1996
                                                 -------   -------   -------
<S>                                              <C>       <C>       <C>
Revenue:
  Products......................................    88.0 %    88.9 %    90.5 %
  Service and support...........................    12.0      11.1       9.5
                                                 -------   -------   -------
    Total revenues..............................   100.0     100.0     100.0
Cost of sales:
  Products......................................    66.1      69.7      59.0
  Service and support...........................    46.0      55.3      61.7
                                                 -------   -------   -------
    Total cost of sales.........................    63.7      68.1      59.3
                                                 -------   -------   -------
Gross profit....................................    36.3      31.9      40.7
Operating expenses:
  Selling, general and administrative...........    56.8      46.6      40.9
  Research and development......................    41.6      24.8      17.6
                                                 -------   -------   -------
    Total operating expenses....................    98.4      71.4      58.5
Other income (expense):
  Interest expense, net.........................    (1.9)     (3.7)     (4.4)
  Cost of discontinued registration.............     --        --       (3.1)
                                                 -------   -------   -------
    Total other income (expense)................    (1.9)     (3.7)     (7.5)
Loss before income tax benefit allocated from
 BFGoodrich.....................................   (64.0)    (43.2)    (25.3)
Income tax benefit allocated from BFGoodrich....    19.8      15.1       6.9
                                                 -------   -------   -------
Net loss........................................   (44.2)%   (28.1)%   (18.4)%
                                                 =======   =======   =======
</TABLE>
 
 Recent Results
 
  Revenues for the first quarter of 1997 were $8.0 million compared to $5.8
million in the first quarter of 1996, which includes revenues from the sale of
17 (including one rental conversion) and 13 SLS Systems, respectively. Gross
profit for the first quarter of 1997 was $3.5 million compared to $2.3 million
in the first quarter of 1996 and, as a percentage of revenues, increased to
43% in 1997 from 40% in 1996. Operating expenses for the first quarter of 1997
were $4.1 million compared to $3.0 million in the first quarter of 1996, and
were approximately 51% of revenues for each quarter. The $1.1 million increase
in operating expenses was primarily due to increased selling, engineering and
research and development expenses. The Company incurred an operating loss of
$0.6 million for the first quarter of 1997 compared to $0.7 million in the
first quarter of 1996 and a net loss of $0.7 million in the first quarter of
1997 compared to a net loss of $0.6 million in the first quarter of 1996.
 
 Comparison of Years Ended December 31, 1996 and December 31, 1995
 
  Revenues. Revenues for 1996 were $24.4 million, an increase of 71.6 percent,
or $10.2 million, compared to revenues of $14.2 million for 1995.
 
  Product sales revenue for 1996 was $22.1 million, an increase of 74.7
percent, or $9.4 million, compared to product sales revenue of $12.6 million
for 1995. The increase was primarily attributable to greater sales of SLS
Systems and powdered materials. The number of SLS Systems sold or rented
increased to 51 in 1996 from 36 in
 
                                      17
<PAGE>
 
1995. Revenues from powdered materials sales increased as a result of a larger
number of installed SLS Systems along with increased sales of ProtoForm powder
and the introduction of TrueForm, RapidSteel and SandForm powdered materials
during 1996.
 
  Service and support revenue for 1996 was $2.3 million, an increase of 46.2
percent, or $730,000, compared to service and support revenue of $1.6 million
for 1995. Service and support revenue increased primarily as a result of the
recognition of deferred warranty and maintenance revenue associated with the
larger number of installed SLS Systems.
 
  Gross Profit. Gross profit for 1996 was $9.9 million, an increase of 119.1
percent, or $5.4 million, compared to gross profit of $4.5 million for 1995.
As a percentage of revenue, gross profit increased to 40.7 percent during the
period from 31.9 percent in 1995.
 
  Gross profit attributable to product sales for 1996 was $9.0 million, an
increase of 136.3 percent, or $5.2 million, compared to gross profit
attributable to product sales of $3.8 million for 1995. As a percentage of
product sales revenue, gross profit attributable to product sales increased to
41.0 percent during the period, compared to 30.3 percent for the same period
in 1995. The increase in gross profit attributable to product sales as a
percentage of product sales revenue resulted primarily from an increase in the
average SLS System sales price due in part to the introduction of the higher
priced Sinterstation 2500 System. Gross profit margin was also positively
impacted during 1996 by the sale of two SLS Systems in the first quarter that
had been used in the Company's operations and were carried on the Company's
books at a substantially depreciated value.
 
  Gross profit attributable to service and support revenues for 1996 was
$885,000, an increase of 25.4 percent, or $179,000, compared to gross profit
attributable to service and support revenues of $706,000 for 1995. As a
percentage of service and support revenue, gross profit attributable to
service and support revenues was 38.3 percent and 44.7 percent for 1996 and
1995, respectively.
 
  Selling, General and Administrative Expense. Selling, general and
administrative expenses include payroll and fringe benefits, advertising and
promotion expenses and other. Selling, general and administrative expense for
1996 was $10.0 million, an increase of 50.8 percent, or $3.4 million, compared
to selling, general and administrative expense of $6.6 million for 1995. A
larger workforce in 1996 resulted in compensation and fringe benefits
increasing more than $1.3 million over 1995 costs. Agent commissions and
advertising and promotion costs increased by approximately $703,000 over 1995
costs. Selling, general and administrative expenses in 1996 were also
adversely impacted by a $268,000 addition to the allowance for doubtful
accounts, primarily relating to one account, in the fourth quarter and
severance costs of $250,000. Other selling, general and administrative
expenses for 1996 increased by approximately $839,000 over 1995 costs. As a
percentage of revenue, selling, general and administrative expense decreased
to 40.9 percent in 1996 from 46.6 percent in 1995, primarily due to the effect
of fixed costs being spread over a larger base of revenues.
 
  Research and Development Expense. Research and development expense for 1996
was $4.3 million, an increase of 21.9 percent, or $771,000, compared to
research and development expense of $3.5 million for 1995. As a percentage of
revenue, research and development expense decreased to 17.6 percent for 1996
from 24.8 percent for 1995, primarily due to the increase in revenues. The
increase in research and development expense for 1996 as compared to research
and development expense for 1995 was due to the Company completing development
on the Sinterstation 2500, the continuing improvement of the selective laser
sintering process and the ongoing development of new powdered materials to be
used in the selective laser sintering process.
 
  Interest Expense. Net interest expense for 1996 was $1.1 million, an
increase of $536,000 compared to interest expense of $530,000 for 1995. This
reflects an increase in the average daily balance of the Company's outstanding
indebtedness and an increase in the average interest rates on such debt.
 
  Cost of Discontinued Registration. In the fourth quarter of 1996, the
Company expensed $752,000 of legal, accounting and other professional services
related to this initial public offering, which was commenced in 1996 and
postponed.
 
                                      18
<PAGE>
 
  Income Taxes. As a result of its tax sharing arrangement with BFGoodrich,
the Company was allocated an income tax benefit of $1.7 million in 1996
compared to $2.1 million in 1995.
 
 Comparison of Years Ended December 31, 1995 and December 31, 1994
 
  Revenues. Revenues for 1995 were $14.2 million, an increase of 53.8 percent,
or $5.0 million, compared to revenues of $9.2 million for 1994.
 
  Product sales revenue for 1995 was $12.6 million, an increase of 55.4
percent, or $4.5 million, compared to product sales revenue of $8.1 million
for 1994. The increase was primarily attributable to higher SLS Systems and
powdered materials sales. The number of SLS Systems shipped increased to 36 in
1995 (including two rental SLS Systems) from 23 in 1994. In 1995 the Company
began offering technological enhancements as upgrades to its SLS Systems and
experienced increased revenues from powdered material sales as a result of a
larger number of SLS System users purchasing DTM materials and the
introduction of the Company's new ProtoForm powdered material in March 1995.
 
  Service and support revenue for 1995 was $1.6 million, an increase of 42.0
percent, or $467,000, compared to service and support revenue of $1.1 million
for 1994. Service and support revenue increased primarily as a result of the
recognition of deferred warranty and maintenance revenues associated with the
larger number of installed SLS Systems.
 
  Gross Profit. Gross profit for 1995 was $4.5 million, an increase of 35.1
percent, or $1.1 million, compared to gross profit of $3.4 million for 1994.
As a percentage of revenue, gross profit decreased to 31.9 percent in 1995
from 36.3 percent in 1994.
 
  Gross profit attributable to product sales for 1995 was $3.8 million, an
increase of 38.9 percent, or $1.0 million, compared to gross profit
attributable to product sales of $2.8 million for 1994. As a percentage of
product sales revenue, gross profit decreased to 30.3 percent in 1995 from
33.9 percent in 1994. The decrease in gross profit as a percentage of product
sales revenue in 1995 resulted primarily from a lower average sales price of
the Company's SLS Systems and because in 1994, the Company's gross profit was
positively impacted by the sale of two SLS Systems that were carried at no
cost. These two SLS Systems were pre-production or "beta" units that had been
sold to customers under a special testing program in 1992 in which such
customers undertook to provide testing results to DTM. Upon providing
commercial SLS Systems to the customers involved in the testing program, the
pre-production units were returned to DTM and carried at no value because the
Company, at that time, did not intend to offer such units for resale.
 
  Gross profit attributable to service and support revenues for 1995 was
$706,000, an increase of 17.5 percent, or $105,000, compared to gross profit
attributable to service and support revenues of $601,000 for 1994. As a
percentage of service and support revenue, gross profit decreased to 44.7
percent in 1995 from 54.0 percent in 1994. The decrease in gross profit as a
percentage of service and support revenue resulted from a greater number of
field service employees and related costs required to service a larger, more
geographically diverse installed base.
 
  Selling, General and Administrative Expense. Selling, general and
administrative expense for 1995 was $6.6 million, an increase of 26.1 percent,
or $1.4 million, compared to selling, general and administrative expense of
$5.2 million for 1994. A larger workforce in 1995 resulted in compensation and
fringe benefits increasing more than $780,000 over 1994 costs. In addition,
agent commissions and advertising and promotion costs increased by
approximately $620,000 over the prior year. As a percentage of revenue,
selling, general and administrative expense decreased to 46.6 percent in 1995
from 56.8 percent in 1994, primarily due to the increase in revenues.
 
  Research and Development Expense. Research and development expense for 1995
was $3.5 million, a decrease of 8.3 percent, or $319,000, compared to research
and development expense of $3.8 million for 1994.
 
                                      19
<PAGE>
 
As a percentage of revenue, research and development expense decreased to 24.8
percent in 1995 from 41.6 percent in 1994, primarily due to the increase in
revenues.
 
  Interest Expense. Net interest expense for 1995 was $530,000, an increase of
$352,000 compared to interest expense of $178,000 for 1994. This reflects an
increase in the average daily balance of the Company's outstanding
indebtedness and an increase in the average interest rates on such debt.
 
  Income Taxes. As a result of its tax sharing arrangement with BFGoodrich,
the Company was allocated an income tax benefit of $2.1 million in 1995
compared to $1.8 million in 1994.
 
SELECTED QUARTERLY RESULTS
 
  The following table sets forth certain unaudited quarterly results of
operations for the three-month periods ended March 31, 1995 through December
31, 1996. This information has been presented on substantially the same basis
as the audited consolidated financial statements appearing elsewhere herein.
The unaudited quarterly results of operations should be read in conjunction
with the Company's audited consolidated financial statements and related
notes. The quarterly financial information presented herein should not be
relied upon as an indication of future quarterly performance.
 
<TABLE>
<CAPTION>
                                                               THREE MONTHS ENDED
                       ---------------------------------------------------------------------------------------------------
                       MARCH 31,  JUNE 30,  SEPTEMBER 30,  DECEMBER 31,  MARCH 31,  JUNE 30,  SEPTEMBER 30,  DECEMBER 31,
                          1995      1995         1995          1995         1996      1996         1996         1996(1)
                       ---------- --------- -------------- ------------- ---------- --------- -------------- -------------
                                                             (DOLLARS IN THOUSANDS)
<S>                    <C>        <C>       <C>            <C>           <C>        <C>       <C>            <C>
SLS Systems sold or
 rented..............         6          9          10            11           13         12           6            20
Revenues:
 Product.............   $ 1,749    $ 2,903     $ 3,036        $4,944       $5,329    $ 5,049     $ 3,040        $8,652
 Service and
  support............       264        291         452           572          461        507         736           605
                        -------    -------     -------        ------       ------    -------     -------        ------
 Total...............     2,013      3,194       3,488         5,516        5,790      5,556       3,776         9,257
Cost of sales:
 Product.............     1,275      2,173       2,179         3,176        3,169      3,022       1,757         5,073
 Service and
  support............       160        170         300           243          300        320         428           376
                        -------    -------     -------        ------       ------    -------     -------        ------
 Total...............     1,435      2,343       2,479         3,419        3,469      3,342       2,185         5,449
                        -------    -------     -------        ------       ------    -------     -------        ------
Gross profit.........       578        851       1,009         2,097        2,321      2,214       1,591         3,808
Operating expenses...     2,304      2,437       2,475         2,925        2,990      3,219       3,724         4,339
                        -------    -------     -------        ------       ------    -------     -------        ------
Operating loss.......   $(1,726)   $(1,586)    $(1,466)       $ (828)      $ (669)   $(1,005)    $(2,133)       $ (531)
                        =======    =======     =======        ======       ======    =======     =======        ======
</TABLE>
- --------
(1) Operating expenses for the three months ended December 31, 1996 include
    unusual expenses of $250,000 for severance costs and $268,000 of bad debt
    expense. Excluding these items, operating loss for the period would have
    been $13,000.
 
SEASONALITY
 
  The Company's revenues are affected by capital budgeting and spending
patterns in the North American market and shortened selling periods in certain
international markets. Due to these seasonal factors, the Company typically
experiences slowdowns in sales of SLS Systems during the first quarter as the
result of capital spending patterns in the North American market and during
the third quarter as the result of shortened selling periods in certain
international markets.
 
FOREIGN OPERATIONS
 
  The Company competes on an international basis through its wholly owned
subsidiary located in Germany and through export sales derived from its United
States sales operations (principally to the Pacific Rim). Sales to
 
                                      20
<PAGE>
 
customers outside of the United States constitute a significant portion of
DTM's revenues. International sales accounted for 34.8 percent, 33.5 percent
and 50.0 percent of the Company's total net revenues in 1994, 1995 and 1996,
respectively. The only foreign country that accounted for more than 10% of the
Company's sales during either 1995 or 1996 was Germany, which accounted for
12.0% of the Company's 1995 revenues (declining to 9.6% of the Company's
revenues in 1996).
 
  The Company's German subsidiary has a cost structure which is significantly
different than that of the United States operations. The German company
conducts sales within Germany on its own behalf. It also acts as a sales agent
for the Company and provides certain administrative assistance. Sales into
European countries other than Germany are made directly by the Company to the
end customer. The future results of operations in Germany are expected to be
at or near break-even.
 
  International sales are generally priced in U.S. dollars. However, European
sales prices are sometimes negotiated in either Deutsch Marks or the local
currency. The Company does not engage in hedging to mitigate the effects of
foreign currency exchange rate risk and has not experienced any significant
impact therefrom.
 
EQUITY APPRECIATION PLAN
 
  The Company adopted a phantom stock appreciation rights plan whereby all
phantom stock appreciation rights outstanding upon the Offering will be
converted into immediately exercisable options to acquire shares of the
Company's Common Stock. Such conversion will result in a non-recurring, non-
cash, compensation expense, in the quarter in which it becomes probable that
the closing of the Offering will occur. The amount to be recognized as
compensation expense, with respect to SARs granted during 1995 (which comprise
approximately 81.2% of the total number of SARs granted), will be equal to
approximately $2.9 million to record the appreciation in value of the SARs,
resulting in a substantial reported net loss. See "Management--Equity
Appreciation Plan" and "Note 11--Equity Appreciation Plan" to the Consolidated
Financial Statements.
 
LIQUIDITY AND CAPITAL RESOURCES
 
  Since its inception, cash used by the Company for operations and investing
activities has exceeded cash generated by the Company. The Company generally
has financed its cash needs through transactions with BFGoodrich and
borrowings from commercial banks and other short-term sources.
 
  Net cash used in operating activities was approximately $1.8 million, $1.6
million and $4.1 million in 1994, 1995 and 1996, respectively. Net cash used
in operating activities of $4.1 million for 1996 resulted primarily from the
net loss for the year of $4.5 million adjusted for depreciation and
amortization of $2.2 million. In addition, increases in accounts receivable of
$4.3 million and increases in inventory of $2.7 million were offset by an
increase to accounts payable of $3.3 million. For the three years ended
December 31, 1994, 1995 and 1996, BFGoodrich allocated to the Company
approximately $1.8 million, $2.1 million and $1.7 million, respectively, for
tax benefits resulting from inclusion of the Company in the consolidated
income tax return of BFGoodrich. Such amounts are included in "Due to/from
BFGoodrich" in changes in assets and liabilities used in operating activities
in the Consolidated Statements of Cash Flows in the Consolidated Financial
Statements. See Note 9 to the Consolidated Financial Statements.
 
  The Company's 1996 fourth quarter revenues of $9.3 million resulted from
sales of 20 SLS Systems, a majority of which Systems were sold in the second
half of the quarter. Of the $7.8 million in gross accounts receivable as of
December 31, 1996, the Company had collected approximately $5.2 million
through February 28, 1997. The Company believes that the remaining $2.6
million (other than the doubtful accounts that are reserved) will be
collected. The significant increase in the allowance for doubtful accounts was
primarily due to one account, with an impact of $268,000. The Company believes
that the remaining balance of $372,000 in the allowance for doubtful accounts
is adequate. The Company reviews the balance in the allowance for doubtful
accounts on an ongoing basis to ensure the adequacy of the reserve.
 
                                      21
<PAGE>
 
  The Company's investing activities include expenditures for patents and
licenses, capitalized software costs and furniture and equipment, principally
consisting of the Company's SLS Systems built for internal use and rental
purposes. Net cash used by investing activities was approximately $1.4
million, $2.4 million and $3.0 million in 1994, 1995 and 1996, respectively.
The Company expects that capital expenditures in 1997 will approximate $2.1
million.
 
  The existence of the tax benefit allocation and other services from
BFGoodrich reduced the Company's net loss for years 1994 through 1996. The
Company expects that the loss of the tax benefit allocation would materially
adversely affect its financial results and cash flows if the Company were to
generate losses in any given year, but does not anticipate any adverse effect
if the Company generates profits. The benefits of utilizing future tax loss
carryforwards would be realized, however, should sufficient profits be
generated prior to the expiration of any tax loss carryforwards. The Company
believes that it is reasonably likely that additional costs will be incurred
as its other arrangements with BFGoodrich are discontinued over time, but does
not believe that these costs will be material.
 
  Total indebtedness of the Company was approximately $15.8 million as of
December 31, 1996, consisting primarily of notes payable to commercial banks
under existing lines of credit, short-term borrowings from other financing
sources and a line of credit extended to the Company by BFGoodrich under which
the Company may borrow up to $4.0 million. As of December 31, 1996, amounts
outstanding under these facilities were approximately $11.0 million, $769,000,
and $4.0 million respectively, at weighted average interest rates of 6.2
percent, 21.1 percent and 8.5 percent, respectively. In connection with the
Offering, the Company is required to repay all its bank indebtedness and the
amounts outstanding under the line of credit with BFGoodrich (after giving
effect to the BFGoodrich Debt Conversion). Absent the Offering, the notes
payable to the banks and the line of credit from BFGoodrich mature on July 31,
1998. Short term borrowings mature upon collection of the related
collateralized receivables or termination of the related SLS System rental
agreement. In the past, BFGoodrich assisted the Company in obtaining loans
from commercial banks by providing comfort letters to lenders. The Company has
been advised by BFGoodrich that upon completion of the Offering it does not
intend to continue to finance, or arrange for the financing of, the operations
of the Company.
 
  The Company has obtained a loan commitment letter from Texas Commerce Bank
for a revolving line of credit ("line of credit") contingent upon the
successful completion of the Offering, retirement of existing bank and
BFGoodrich indebtedness and negotiation and execution of mutually acceptable
definitive documentation. Assuming a line of credit is established with the
terms set forth in the commitment letter, the Company's ability to borrow
thereunder will be subject to a borrowing base calculation and the Company
meeting certain financial thresholds, including attaining certain levels of
"established profitability," as defined therein. Until achieving one such
level, the Company would be permitted to borrow up to $3.0 million;
thereafter, available advances against eligible receivables would be increased
up to a maximum of $6.0 million. Loans under the line of credit would mature
within one year, would be collateralized by the Company's accounts receivable
and inventory and would bear interest at the bank's prime interest rate plus
three quarters of one percent. The commitment provides that the Company would
be bound by customary covenants, including restrictions on additional liens or
borrowings, as well as the payment of dividends, and affirmative reporting
requirements. In addition, the terms of the commitment letter specify that the
bank would have the option to terminate the obligation to make further
advances under the line of credit on 30 days notice if employment of the chief
executive officer of the Company terminates and a qualified successor is not
appointed by the Company and approved by Texas Commerce Bank within a
specified period of time.
 
  The Company believes that the available cash balances upon completion of the
Offering, after repayment of the amounts identified above and the new bank
line of credit, along with cash from operations, will provide sufficient
liquidity for the Company to meet its anticipated cash requirements for at
least the 12 months following the Offering, however, there can be no assurance
that this will be the case. See "--Safe Harbor Statement."
 
                                      22
<PAGE>
 
IMPACT OF RECENTLY ISSUED ACCOUNTING STANDARD
 
  In February 1997, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standards (SFAS) No. 128, Earnings per Share. SFAS No.
128 replaces the presentation of primary earnings per share (EPS) under
Accounting Principles Board Opinion No. 15 and related Interpretations, with
the presentation of basic EPS (which primarily gives effect only to common
shares actually outstanding) and requires dual presentation of basic and
diluted EPS on the face of the income statement for all entities with complex
capital structures. The Company is required to adopt SFAS No. 128 during the
fourth quarter of 1997. The Company has not completed its evaluation of the
potential impact of this new standard on EPS in future periods. However, based
on the equity instruments currently outstanding under existing stock
compensation plans, this new standard is not expected to have a material
impact on EPS in future periods.
 
SAFE HARBOR STATEMENT
 
  Investors are cautioned that forward-looking statements contained in this
Prospectus involve risks and uncertainties including without limitation the
matters described in "Risk Factors" and the following: (i) the Company's
plans, strategies, objectives, expectations and intentions are subject to
change at any time at the discretion of management and the Board of Directors;
(ii) the Company's plans and results of operations will be affected by the
Company's ability to manage its growth and working capital; (iii) the
Company's business is highly competitive and the entrance of new competitors
or the expansion of the operations by existing competitors in the Company's
markets could adversely affect the Company's plans and results of operations.
 
                                      23
<PAGE>
 
                                   BUSINESS
 
  DTM Corporation develops, designs, manufactures, markets and supports, on an
international basis, rapid prototyping and rapid tooling systems , powdered
materials and related services. The Company's SLS Systems and materials are
based on proprietary and patented selective laser sintering technology. Rapid
prototyping is the creation of a solid three-dimensional model or prototype
directly from CAD data. Rapid tooling is the creation of durable tooling that
can be subsequently employed to produce substantial quantities of parts for
market introduction. Use of the Company's SLS Systems significantly reduces
the time required to produce models and prototypes for testing actual product
fit and form, ergonomic design and functionality from what otherwise could be
months or weeks to days or, in some cases, hours. The Company's SLS Systems
are used to accelerate the design, development and market introduction of
products in a wide range of industries, including but not limited to the
automotive, aerospace, medical, electronics, telecommunications, computer,
appliance, footwear, toy and power tool industries. BFGoodrich currently owns
approximately 92 percent of the outstanding Common Stock. See "Principal and
Selling Shareholders."
 
INDUSTRY OVERVIEW
 
  Since the 1980s, the field of product engineering, design and development
has undergone rapid change with ever-increasing emphasis on time to market as
a key factor in successful product introduction. The rapid prototyping
industry has arisen as a part of, and in response to, this change. In
addition, utilization and growth in purchases of rapid prototyping systems
have been directly influenced by the availability of CAD installations. During
the early years of the rapid prototyping industry, the limited availability of
CAD outside of North America restricted growth; however, worldwide
installations of CAD have proliferated in recent years, making rapid
prototyping technology a viable alternative to conventional methods.
 
 Development of Rapid Prototyping
 
  Under conventional technology, models, prototypes, patterns and metal mold
inserts are typically created using milling and computer numerically
controlled and electrode machining techniques--cutting and sanding solid
blocks of materials to arrive at the desired shape. Depending on the material
used and the complexity of the part, this process can be time-consuming and
expensive. In some cases, the only way to create an appropriate test model or
prototype using conventional methods is essentially to duplicate the steps
used to create the mass-produced product. The conventional processes can take
weeks, and in some cases months, and often involve costly steps and delays for
a manufacturer seeking to take advantage of a new market opportunity.
 
  The first rapid prototyping systems were introduced in 1986 in an attempt to
address some of the cost and time to market disadvantages of conventional
technology. These systems were based on stereolithography, a process that uses
a laser to convert liquid resin into a solid part. Because of the nature of
the resin material, these initial systems were only capable of producing parts
for use as concept models that were limited to verification of the design's
form and fit. Successive technologies such as selective laser sintering, along
with advances in stereolithography, have broadened the applications for rapid
prototyping to include functional prototypes and patterns for secondary
processes that enable users to test actual product fit and form, ergonomic
design and functionality.
 
 The Rapid Prototyping Advantage
 
  The capability of rapid prototyping to manufacture models, prototypes,
patterns and metal tool inserts quickly affords users the opportunity to save
time and money by (i) reducing the product development and design cycle and,
consequently, speeding the time to market for new products, (ii) avoiding
product design and development errors by allowing designers to check the fit,
form and function of new designs prior to mass production and (iii) minimizing
the use of more costly conventional techniques.
 
  Rapid prototyping also has made it possible to create patterns that are
subsequently converted into usable parts through secondary processes such as
the production of non-durable molds and investment casting. A
 
                                      24
<PAGE>
 
common technique for replicating small numbers of parts is to use a non-
durable mold, in which the rapid prototyping pattern is embedded in silicone
rubber that hardens, then is cut open to create a mold. The non-durable mold
is used to replicate parts by injecting the mold with a plastic polymer.
Typically, between 10 and 30 parts can be replicated before the mold breaks
down. The Company believes that the creation of patterns for the production of
non-durable molds is one of the fastest growing applications in the rapid
prototyping market. Investment casting is a common manufacturing process used
for the production of metal parts. For investment casting, a rapid prototyping
pattern is coated with a ceramic slurry (particles suspended in a liquid).
After the slurry has hardened, the ceramic coated pattern is placed in a
furnace where the pattern is burned out leaving a ceramic shell. The ceramic
shell is cooled and molten metal is poured into the shell. When the metal has
hardened, the ceramic shell is removed, leaving a metal part. The usage of
investment casting of rapid prototyping patterns has significantly increased
as a technique for the production of prototype metal parts.
 
  Four emerging capabilities of rapid prototyping are (i) the creation of core
and cavity metal mold inserts from metal powder for use in plastic injection
molding, (ii) the direct production of prototype metal parts from a range of
metal powders, (iii) the manufacture of flexible parts for automotive,
consumer and medical applications and (iv) the direct manufacturing of sand
molds and cores (patterns placed in sand molds for the purpose of creating
features and voids in a cast metal part) for use in the casting of metal parts
by foundries. The Company believes that its selective laser sintering
technology is the only commercially practiced rapid prototyping process that
allows a user to access all of these capabilities from a single platform.
 
 Market Direction
 
  The Company believes that the emerging ability of rapid prototyping to
manufacture metal parts in a range of materials and to make prototype metal
molds for use in plastic injection molding will expand rapid prototyping
beyond pattern, model and prototype applications, thereby further fueling
market growth. The Company also anticipates that the demand for rapid
prototyping materials and related services will grow significantly as the
installed base increases and that materials and related services will
represent an increasingly significant portion of future total industry
revenues.
 
  DTM believes that the industry has entered a process of market segmentation
with a high- and low-end distinction emerging. The low-end segment is
characterized by smaller, lower-priced rapid prototyping systems, or "desk-
top" systems. These desk-top systems produce models primarily for evaluating
design form and fit and are designed with an emphasis on speed of part build
as opposed to part accuracy and functionality. Today, this type of application
is served by virtually all existing commercial systems regardless of their
price or size. The high-end market segment is served by rapid prototyping
systems, such as its SLS Systems, that produce functional parts and can be
integrated into rapid manufacturing processes. These systems are generally
larger, more complex, more expensive and more versatile than desk-top systems.
The Company anticipates that integration of high-end systems into the
manufacturing process will occur as rapid prototyping technologies such as
selective laser sintering introduce the capability to manufacture metal parts
directly and quickly produce both tooling that can produce parts and the parts
themselves in the manufacturers' desired quantities and materials of choice.
In particular, the Company believes that the key to continuing widespread
acceptance of a particular rapid prototyping system will be its ability to
reduce time to market by quickly producing tooling, either permanent or
prototype, for functional part production.
 
                                      25
<PAGE>
 
THE DTM RAPID PROTOTYPING SOLUTION
 
  The market for rapid prototyping products and services includes multiple,
competing technologies. DTM believes that it is the only company that markets
selective laser sintering in North America and one of only two companies that
market the technology outside of the United States. The Company believes that
the following characteristics differentiate its selective laser sintering
process from other competing rapid prototyping technologies:
 
  Wide Range of Applications
 
  The Company's SLS Systems can currently process seven materials: a
  polycarbonate powder; two nylon powders; ProtoForm powder (a nylon
  composite); RapidSteel powder; TrueForm powder; and SandForm powder. The
  Company recently announced the expected availability of two new products:
  Somos 201 powder, a new material supplied by DuPont that yields highly
  flexible parts with rubber-like characteristics, and VeriForm powder, a
  significantly improved material for functional prototypes. This wide range
  of materials permits the user of an SLS System to produce models, patterns,
  functional prototypes and tooling from one platform. Transition from one
  material to another, and hence from one application to another, generally
  takes less than one hour. The Company does not believe that a potential
  rapid prototyping user could duplicate the SLS Systems' total materials and
  applications capability through the use of any other single rapid
  prototyping system.
 
  Strong and Durable Functional Plastic Prototypes
 
  The selective laser sintering process produces parts that can be drilled,
  painted, equipped with electronics and mounted in working product
  assemblies that duplicate the final product. Unlike parts produced with
  many other technologies, these prototypes can be used for rigorous testing
  of product designs in harsh conditions such as extreme temperatures and
  high humidity. For example, prototype parts produced using the selective
  laser sintering process have been placed in automobile engines and operated
  for up to 30,000 miles. Product development and design teams can minimize
  performance problems and reduce design errors by testing parts in projected
  use conditions prior to the mass production of a product.
 
  RapidTool Process Capability
 
  The ability to produce metal mold inserts from metal powder reduces the
  time required to make tooling that can be used to produce up to 80,000
  plastic parts in the material of choice for market testing or introduction.
  Conventional milling and machining techniques can require weeks, and in
  some cases months, and are labor intensive. The RapidTool process can
  produce prototype metal mold inserts in less than 10 working days, with
  minimal supervision. The Company believes that competing, commercial rapid
  prototyping technologies currently do not have the ability to create
  tooling from metal powder. A variation of the Company's RapidTool process
  and RapidSteel material system can also be used to manufacture, in less
  than two working days, epoxy-infiltrated metal cores and cavities that can
  be used on injection molding machines to produce up to approximately 200
  functional parts in the material of choice.
 
  SLS System Productivity
 
  The Company believes that its SLS Systems have certain productivity
  advantages over competing rapid prototyping systems. In the selective laser
  sintering process, the unfused powder remains in the build chamber,
  supporting the shape of the part during the build. Due to this support,
  multiple part builds can be stacked in the Company's SLS System's part
  build chamber, which allows the SLS Systems to produce multiple parts in a
  single run. Conversely, many competing technologies require multiple runs
  of a system to create multiple parts. The Company also believes that its
  SLS Systems have certain part build speed advantages over other rapid
  prototyping technologies. The Company anticipates that productivity
  enhancements now under development could result in significant further
  improvements in 1997.
 
                                      26
<PAGE>
 
  Expandable and Upgradable Technology
 
  DTM's selective laser sintering technology has potential for expansion,
  both in terms of improvements to the process and in terms of current and
  potential powdered sintering materials and applications. The Company
  believes that a significant advantage of selective laser sintering is that
  new and improved materials will, in most cases, be capable of being used in
  existing SLS Systems with very few modifications, if any. The Company has
  previously introduced a number of upgrades to the Sinterstation 2000 System
  that allowed SLS System users to capture the benefits of DTM's SLS System
  product improvement programs without having to purchase a new SLS System.
  For example, DTM recently made available to its existing customers a laser
  scanning upgrade that, with an on-site retrofit, provides enhanced part
  accuracy and quality. Additionally, in 1997, the Company expects to make an
  upgrade available to customers who have the Sinterstation 2000 System and
  desire the thermal and scan speed performance capability of the
  Sinterstation 2500 System. The Company expects to begin shipping this
  upgrade package in the middle of 1997. The ability to retrofit SLS Systems
  affords DTM's customers a degree of protection against the rapid
  obsolescence found in many products using other emerging technologies.
 
BUSINESS STRATEGY
 
  Since its inception, the Company's focus has been on the development and
improvement of the SLS Systems and related materials. During 1995, the Company
also began to concentrate on the development and execution of an international
marketing and distribution strategy for its products. With the advances the
Company has recently achieved in the form of the RapidTool process, the
introduction of ProtoForm, RapidSteel, TrueForm and SandForm powders, the
introduction of the Sinterstation 2500 System and the recently announced
expected availability of Somos 201 and VeriForm powders, the Company believes
that it is positioned to capitalize on its competitive advantages through the
following strategies:
 
  Increase Share of Existing Market Applications
 
  The creation of strong and durable parts, as well as patterns for secondary
  processes, are two of the fastest growing existing applications in the
  rapid prototyping industry. The Company believes that its ProtoForm powder
  has allowed it to become a leading supplier of rapid prototyping systems
  for use in the production of functional prototypes. The Company anticipates
  expanding its position in this area by introducing an improved functional
  prototyping material that gives users the ability to produce parts with
  significantly improved resolution and surface finish. Additionally,
  TrueForm powder allows the SLS System user to manufacture non-durable
  patterns that can be used to fabricate non-durable molds, as well as to
  create cast parts through investment casting. The Company believes that its
  TrueForm powder has enhanced DTM's ability to market the SLS Systems to
  customers in the fast growing pattern segment of the rapid prototyping
  market. The Company also has been engaged in raising the awareness of users
  of investment casting technology of the benefits of using TrueForm for the
  production of high quality cast metal parts. The Company expects to realize
  increased market share as customer awareness of the benefits of these
  materials increases.
 
  Capitalize on RapidTool Process Capability
 
  DTM plans to pursue a leadership role in metal injection mold insert
  applications by marketing the proprietary RapidTool process to tool making
  operations within OEMs, service bureaus and tool manufacturing companies.
  The Company believes that the successful introduction of its RapidTool
  process will facilitate the integration of the selective laser sintering
  technology into manufacturing processes, an area that has experienced
  limited penetration by other rapid prototyping techniques. The Company
  intends to improve the RapidTool process by introducing enhancements that
  will allow for a significant reduction in the cycle time to produce a core
  or cavity.
 
                                      27
<PAGE>
 
  Expand Selective Laser Sintering Materials Offerings
 
  Based upon recent successful new materials introductions, the Company
  believes that it has established the requisite expertise and processes with
  which to further broaden its selective laser sintering materials product
  line. Preliminary experiments, coupled with the proven diversity of the
  selective laser sintering materials capability, lead the Company to believe
  that in the future it should be possible to (i) broaden the performance of
  the selective laser sintering process to include the production of metal
  prototype parts, (ii) develop new and improved functional plastic
  prototyping materials, (iii) broaden the selective laser sintering metal
  mold inserts product line to include additional durable materials, (iv)
  introduce an improved RapidSteel materials system which allows for the
  production in less than 48 hours of epoxy-infiltrated metal molds that have
  a mold production life of up to approximately 200 parts, an application not
  efficiently served by current rapid prototyping technology and (v) develop
  a ceramic-based materials system for the production of tools and parts. The
  Company believes that as a result of this strategy, recurring sources of
  revenue, such as materials, will become an increasingly larger portion of
  total revenues.
 
  An example of the Company's ability to expand its offering of selective
  laser sintering materials is the recent introduction of SandForm powder.
  SandForm powder is used by foundries for the quick and direct production of
  sand molds and cores for the casting of metal parts. Sand molds and cores
  are used for casting metal parts worldwide, particularly for the mass
  production of automotive engine and drive train components. The Company
  believes that selective laser sintering is the only rapid prototyping
  technology capable of the direct manufacture of sand molds and cores.
 
  Broaden SLS System Product Line
 
  The Company's strategy is to continue to pursue the development of more
  advanced SLS Systems. An example of this strategy is the Company's recent
  introduction of the Sinterstation 2500 System, an SLS System with a larger
  part build chamber than the Sinterstation 2000 System and certain other
  productivity improvements. The Sinterstation 2500 System, coupled with the
  Sinterstation 2000 System, provides the Company with a family of SLS
  Systems to offer to both existing and prospective customers. In addition,
  the Company has announced that existing owners of its Sinterstation 2000
  System will have the ability to upgrade to the performance capability of a
  Sinterstation 2500 System and that it intends to begin shipping the upgrade
  in 1997. The Company also intends to introduce during 1997 the
  Sinterstation 2000 GT System, a system that has the speed and performance
  capability of the Sinterstation 2500 System with the smaller part build
  chamber of the Sinterstation 2000 System.
 
  Expand Distribution Network
 
  The Company intends to continue to expand its direct sales force, agent
  network and service and support capabilities. Specifically, the Company
  intends to increase its direct sales force in Western Europe and North
  America, establish a direct sales force in the Pacific Rim and extend its
  agent network into additional key South American, Pacific Rim and Eastern
  European countries. Expansion of the Company's field service and support
  functions is expected to parallel the growth of the installed System base.
  The Company intends to emphasize its commitment to customer support by
  decentralizing its field service and applications support resources into
  regional offices, thereby minimizing its response time to customer support
  requests.
 
DTM'S SELECTIVE LASER SINTERING TECHNOLOGY
 
 The Selective Laser Sintering Process
 
  The Company's SLS Systems employ a combination of software and hardware to
produce plastic models, functional prototypes and patterns from powdered
materials. The patterns can, in turn, be used for secondary processes such as
the production of non-durable molds and investment casting. SLS Systems also
can be used to
 
                                      28
<PAGE>
 
produce metal prototype mold inserts. Customers input designs into the SLS
Systems in the form of CAD drawings, typically in STL format, an industry-
standard file type that most CAD systems can generate. From the CAD file, SLS
Systems quickly and accurately produce models, prototypes, patterns and
tooling in the specified shape.
 
  The Company's selective laser sintering process uses laser energy to sinter
powdered material to create solid objects. The object described by the CAD
file is built layer by layer using the following technique:
 
  . As the selective laser sintering process begins, a thin layer of the
    heat-fusible powder is deposited into the part build chamber.
 
  . An initial cross-section of the object under fabrication is selectively
    "drawn" on the layer of powder by a heat-generating CO/2/ laser. The
    interaction of the laser beam with the powder elevates the temperature to
    the point of melting, fusing the powder particles and forming a solid
    mass. The intensity of the laser beam is modulated to melt the powder
    only in areas defined by the object's design geometry.
 
  . An additional layer of powder is deposited via a roller mechanism on top
    of the previously scanned layer.
 
  . The process is repeated, with each new layer fusing to the layer below
    it. Successive layers of powder are deposited and the process is repeated
    until the part is complete.
 
 The RapidTool Process
 
  The RapidTool process employs selective laser sintering to produce
steel/copper composite mold inserts. RapidSteel powder, DTM's polymer-coated
steel powder, is placed in the SLS System. A "green" part (which consists of
metal powder held together by the polymer) is then produced by using the laser
to selectively sinter the polymer binder and effectively bind the metal
particles together, replicating the mold inserts described in a CAD file. This
part is formed using the same layer by layer manufacturing process that is
used to make plastic parts. The green part is dipped in a polymer binder
solution that infiltrates the part and, after drying for several hours, gives
the green part the hardness necessary for the subsequent process step in a
furnace. The furnace cycle consists of a multi-stage firing cycle. The first
stage burns out the remaining polymers from the steel matrix, the second stage
lightly sinters the metal particles together and the final stage infiltrates
copper into the steel matrix. The green part also can be infiltrated with an
epoxy material to form a core and cavity capable of producing up to
approximately 200 parts on an injection molding machine in the material of
choice.
 
PRODUCTS
 
 The Sinterstation Systems
 
  The Sinterstation Systems contain three key hardware modules: (i) the Powder
Engine Module, where the laser sinters the powdered material and builds the
prototype, model or mold insert; (ii) the Controls Module, which contains the
computer and system operator's console for running the SLS Systems; and (iii)
the Environment Control Module, which regulates the temperature and atmosphere
of the build chamber. The size and number of objects that can be built in the
build chamber varies depending on the part size, type of sintering powder used
and part configuration. Objects that are larger than the size of the build
chamber can often be built in pieces and then assembled with no sacrifice in
strength or accuracy.
 
  The Company has developed a large library of application software designed
to control the selective laser sintering process. This software sets
parameters and directs the various components of the platform hardware based
on the type of material being used in the build process. The Company also has
designed a range of service, support and utility software programs to assist
customers in optimizing the prototype and mold building process. For example,
one of the Company's productivity programs organizes multiple parts within the
build chamber for maximum space utilization.
 
  The Company's SLS Systems can be configured for use with a single powder or
for any combination of thermoplastics and metal. The list prices for
Sinterstation Systems range from $299,000 to approximately
 
                                      29
<PAGE>
 
$500,000, depending on the options selected by the customers. Systems
typically include the SLS System platform including all three modules,
material handling equipment, documentation, software licenses, licenses for
using DTM-supplied powdered material and installation. Some of these options
may increase the purchase price of the System. The purchase price also
includes a one-week training course in operation of the SLS System for up to
two of the customer's personnel.
 
 Sintering Materials
 
  The Company's materials are sold in drums. The list prices for the following
powdered materials range from $23 to $60 per pound, depending on the material,
except for SandForm powder, which sells for $4.50 per pound. Characteristics
and uses of selective laser sintering powders available through DTM for use in
its Sinterstation Systems are as follows:
 
<TABLE>
<CAPTION>
     MATERIAL/
  YEAR INTRODUCED        DESCRIPTION         CHARACTERISTICS                 USES
<S>                   <C>               <C>                        <C>
VERIFORM POWDER 1997  DTM-developed     Tough, high strength mate- Designed for testing
                      high resolution   rial creates parts with    functional prototypes in
                      engineering       excellent feature defini-  high stress, harsh envi-
                      thermoplastic     tion in one of several     ronments and other de-
                                        colors                     manding applications
                                                                   where the prototype
                                                                   needs to operate like
                                                                   the final product.
- -------------------------------------------------------------------------------------------
SOMOS 201 POWDER      DuPont-developed  Highly ductile rubber-like Flexible functional pro-
1997                  elastomeric en-   material that can with-    totypes of rubber and
                      gineering poly-   stand "under-the-hood"     specialized plastic
                      mer               high temperatures and      parts such as hoses,
                                        harsh environments         gaskets, moldings seals,
                                                                   athletic shoes and medi-
                                                                   cal models.
- -------------------------------------------------------------------------------------------
SANDFORM POWDER       Polymer-coated    Interchangeable with ex-   Sand molds and inserts
1996                  zirconium sand    isting sand mold and core  for casting parts in a
                      particles         materials; particle size   variety of metals.
                                        and material characteris-
                                        tics that enable fast pro-
                                        duction of smooth sand
                                        mold patterns
- -------------------------------------------------------------------------------------------
TRUEFORM POWDER       DTM-developed     Capable of producing ex-   Patterns for casting
1996                  polymer with      tremely smooth, accurate   single metal parts or
                      very fine parti-  pattern masters            low-quantity plastic
                      cle size and                                 parts with complex geom-
                      spherical shape                              etry; thin wall struc-
                                                                   tures where surface fin-
                                                                   ish is important.
- -------------------------------------------------------------------------------------------
RAPIDSTEEL POWDER     DTM-developed     Creates durable metal mold Injection mold core and
1995                  carbon steel      inserts that can produce   cavity inserts for pro-
                      particles with a  thousands of plastic parts totype hard tooling us-
                      special polymer                              ing DTM's RapidTool
                      coating                                      process.
- -------------------------------------------------------------------------------------------
PROTOFORM POWDER      DTM-developed     Extremely durable, flexi-  Prototypes with fine de-
1995                  composite mate-   ble and strong; stands up  tail and high strength
                      rial consisting   to harsh chemicals and de- where testing in harsh
                      of nylon and      manding temperature        conditions is required.
                      spherical glass   environments               Can also be used to make
                      particles                                    models.
- -------------------------------------------------------------------------------------------
NYLON AND FINE NYLON  Engineering       Durable material that can  Functional prototypes of
1993/1994             thermoplastic     be drilled, painted and    actual products that re-
                                        used in environments simi- quire snap fits. Can
                                        lar to the end product;    also be used to make
                                        offers substantial heat    models.
                                        and chemical resistance
- -------------------------------------------------------------------------------------------
POLYCARBONATE         Engineering       Durable and heat resistant Conceptual models and
1991                  thermoplastic                                durable pattern masters
                                                                   for plastic short run
                                                                   tooling, metal invest-
                                                                   ment casting and sand
                                                                   casting.
- -------------------------------------------------------------------------------------------
</TABLE>
 
 
                                      30
<PAGE>
 
  The Company sells its SLS Systems with the materials capabilities selected
by the customer and an initial supply of powders. Thereafter customers can add
materials capabilities by purchasing materials start-up modules, which include
an initial supply of materials plus the software developed by the Company for
optimal processing of that particular material. The Company subcontracts with
other manufacturing organizations for the production of sintering materials or
obtains those materials directly from the producer. The Company follows a
practice of single sourcing materials with these suppliers.
 
 Other Products
 
  Along with the Sinterstation Systems and powdered sintering materials, the
Company supplies ancillary equipment used for finishing parts as well as
processing and handling powdered materials. These products are offered by DTM
primarily as a convenience to its customers. However, a specialized furnace
used as part of the Company's RapidTool process is manufactured expressly for
DTM, which holds the worldwide marketing rights. In addition, DTM is currently
the exclusive source of a custom workbench for recycling powder, which is also
manufactured solely for the Company.
 
RESEARCH AND NEW PRODUCT DEVELOPMENT
 
  The Company's research and development effort focuses on improving core
technologies that are critical to future growth. These include development of
new materials, as well as improved powder handling technology, laser beam
delivery systems and thermal control systems. The Company's development
efforts are enhanced through informal development arrangements with key
customers, materials suppliers and hardware suppliers. The Company also
collaborates on research and development with The University of Texas as well
as other universities and research institutions that operate SLS Systems.
 
  During 1994, 1995 and 1996, the Company devoted approximately $3.8 million,
$3.5 million and $4.3 million to research and development, respectively. These
expenditures have resulted in ongoing improvement in the selective laser
sintering technology. The Company's Sinterstation Systems have been improved
significantly since the first commercial sale in 1992, which improvements have
resulted in higher degrees of accuracy, reliability and productivity. Recent
research and development successes in the powder and process area include the
introduction of a second nylon powder in 1994, the commercial release of
ProtoForm powder in early 1995, the introduction of the RapidTool process and
related RapidSteel powder in late 1995, the commercial release of TrueForm
powder in early 1996 and SandForm powder in the third quarter of 1996 and the
introduction of the Sinterstation 2500 System in September 1996. The Company
recently announced the expected availability of two new powders: Somos 201
powder, a new material supplied by DuPont that yields highly flexible parts
with rubber-like characteristics, and VeriForm powder, a significantly
improved material for functional prototypes.
 
  Longer term, the Company believes that the selective laser sintering
technology is capable of processing an even wider range of materials, thereby
improving the performance of the Company's products in existing applications
and advancing the technology into new applications. Based on preliminary
experiments, coupled with the proven diversity of the selective laser
sintering materials capability, the Company believes that it should be able to
(i) broaden the performance of the SLS System to include the production of
prototype metal parts, (ii) develop new and improved functional plastic
prototyping materials, (iii) broaden the metal mold inserts product line to
include additional durable materials and (iv) develop ceramic materials for
the production of special tooling and part applications.
 
MARKETING AND CUSTOMERS
 
 Customers
 
  Rapid prototyping systems are purchased by OEMs, universities, military and
defense organizations and service bureaus. Past purchasers of the Company's
SLS Systems include The Boeing Company, Eastman
 
                                      31
<PAGE>
 
Kodak Company, Fiskars Oy, Ford Motor Company, General Motors Corporation,
Hughes Christensen, LG Electronics, Inc. (Goldstar), Mercedes-Benz AG, Pratt &
Whitney, Rockwell International Corporation, Samsung Electronics Co., Ltd.,
Toyota Motor Corporation and Whirlpool Corporation, among others. These
customers have purchased SLS Systems in the past and continue to purchase
materials from the Company. However, none of such customers individually
accounted for a material amount of the Company's sales in 1996. In addition,
universities and technical transfer centers in 12 countries had purchased SLS
Systems as of December 31, 1996.
 
  The Company also sells a substantial portion of SLS Systems to service
bureaus. Service bureaus typically offer a full line of product design,
prototyping and limited-run manufacturing services. They are generally used by
companies that may not be able to justify the cost of their own rapid
prototyping system, that have elected to outsource rapid prototyping services
or that may choose to investigate different technologies before making their
own investment in a rapid prototyping system. The Company anticipates that
service bureaus will continue to be a major provider of rapid prototyping
goods and services. In 1996, 46.5 percent of the Company's revenues were
derived from the sales of products and services to service bureaus, and the
Company anticipates that service bureaus will continue to provide a
significant portion of its revenues. Many of the Company's customers have
purchased more than one SLS System and, based on these experiences, the
Company anticipates a significant repeat business with its existing customers.
 
  Generally, the Company's revenues are derived from sales to a wide variety
of customers. However, during 1995 approximately 15 percent of total revenues
were derived from sales to Compression Inc. In 1994 and 1996, the Company did
not have a customer representing 10 percent or more of sales revenues. While
the Company anticipates that occasional multiple unit purchases by a single
purchaser could result in a large percentage of total sales being concentrated
in one customer from time to time, it does not consider itself dependent on
any particular customer.
 
 Product Distribution
 
  The Company distributes its products in the United States, Canada, Western
Europe and key Pacific Rim and South American countries. In the United States
and Canada, the Company employs a direct sales force augmented by agents in
the Upper Midwest. In Germany, the Company's products are distributed by DTM
GmbH, a wholly owned German subsidiary. DTM GmbH is a sales and service
organization whose efforts are augmented by sales agents in France, Italy,
Portugal, Spain, Sweden and the United Kingdom. The Company also distributes
its goods and provides services in the Pacific Rim and South America through a
network of agents, including agents in Argentina, Australia, Brazil, China,
Hong Kong, India, Indonesia, Japan, Malaysia, Singapore, South Korea and
Taiwan. As of December 31, 1996, the Company had shipped SLS Systems to
customers in a total of 17 countries.
 
  DTM's sales agents are selected for their sales and product service
capabilities. They generally are experienced in selling products in fields
related to rapid prototyping, but agree contractually to represent the
Company's products exclusively in the field of rapid prototyping. The sales
agents periodically undergo refresher training in SLS System service.
Throughout the next year, the Company intends to continue the expansion of its
direct sales force, agent network and service and support capabilities.
 
 Marketing and Sales
 
  The Company's marketing programs utilize a mix of seminars, trade shows,
direct mailings, literature, videos, press releases, telemarketing, brochures
and customer and application profiles to identify prospects that match a
typical SLS System user profile. The Company also focuses its marketing
resources on expanding the use of the selective laser sintering technology by
existing customers. This strategy includes marketing SLS Systems, upgrades and
related products.
 
 The Company views ongoing sales to service bureaus as important to its
overall business strategy and focuses a significant share of its marketing and
selling resources on these target customers. In early 1996, the Company
 
                                      32
<PAGE>
 
introduced its "DTM OnBoard" marketing program. DTM OnBoard is a strategic
partnering effort between DTM and service bureaus. Upon enrollment in DTM
OnBoard, the Company trains the service bureau's personnel to promote
selective laser sintering applications, conducts joint seminars and direct
mail campaigns for sales lead generation and carries out a cooperative
marketing program.
 
  The Company offers an SLS System rental program for customers who wish to
test the selective laser sintering technology prior to making a purchase
commitment or who wish to get an early start on implementation of the process
while waiting for completion of their internal funding process.
 
SERVICE AND SUPPORT
 
  The Company maintains a staff of field service and support personnel in
Europe and North America. The field service organization is responsible for
installations of new SLS Systems and for conducting the Company's warranty
service and maintenance program. The Company's sales agents in the Pacific Rim
and South America also are trained to service SLS Systems. As a result of the
capability of the Company's field service organization and its trained agents,
the Company's response time to customer requests for assistance is generally
24 hours or less. The Company's applications support personnel assist
customers with SLS System operations and provide advice and assistance on
building unusually complicated parts. The applications team also is charged
with keeping customers informed of changes and advancements in the selective
laser sintering technology or SLS System operating procedures.
 
  The Company is in the process of decentralizing its field service and
applications groups in order to maintain its high level of customer service.
In the United States, a service facility was opened in the Detroit area in
early 1996. Further decentralization in North America will occur in 1997. The
Company has also expanded its Pacific Rim field service capability by
establishing a field service office in Singapore in January of 1997.
 
  The Company provides each new customer with a one-week training course in
advance of delivery of its SLS System. The course covers SLS System operation
and preventive maintenance procedures, materials and process information,
safety training and problem-solving techniques. The class includes formal
classroom instruction, guided user-interface simulations and actual SLS System
operation in the DTM applications laboratory. Supplemental technical
assistance is provided to customers through a telephone customer support line
or additional on-site training that can be scheduled at the customer's
request. Furthermore, when customers add metal powder capability, the Company
provides additional RapidTool process training at its facilities in Austin,
Texas.
 
  The Company's SLS Systems are sold with a comprehensive 12-month warranty on
parts and labor, which excludes consumable items and the laser charge. The
Company's customers may continue the level of service provided by the initial
12-month warranty by purchasing an annual maintenance contract. The
maintenance contract provides comprehensive part and labor coverage,
preventive maintenance and software upgrades. Historically, annual maintenance
contracts have been purchased for the majority of the Systems sold after
expiration of the initial warranty period. For those customers choosing not to
purchase annual maintenance contracts, DTM also provides repair and
maintenance services on a time and materials basis.
 
MANUFACTURING
 
  The Company's manufacturing strategy is based on the outsourcing of major
sub-assemblies of the Sinterstation Systems, which include the Powder Engine
Module, Controls Module and Environment Control Module. The sub-assemblies are
built by different suppliers and shipped to Austin, Texas, for assembly. The
Company performs final assembly by connecting the sub-assemblies and adding
other key components. The SLS System then is put through extensive calibration
and testing, which includes making parts from various materials. A final
quality check precedes clean-up and packaging for shipment. Assembly and final
testing at the Company's site comprises a 21-day cycle. When the SLS System
arrives at the customer's location, DTM personnel install it and perform on-
site testing over a period of two to three days. The Company also assembles
upgrade packages and, in some cases, installs those packages.
 
                                      33
<PAGE>
 
  Procurement lead time for the major sub-assemblies of the SLS Systems can be
up to 16 weeks. Due to the Company's long lead time for major sub-assemblies,
it places orders for such parts on a forecast basis with the intention of
moving raw materials inventory immediately into work in process. The Company
involves its suppliers in the design and testing stages of new components in
order to improve manufacturability. The Company believes that the benefits of
maintaining close relationships with its suppliers are more cost efficient
product designs and the ability to control manufacturing costs. While the
Company subcontracts for manufacture of SLS System components, powdered
sintering materials and accessories from single-source, third-party suppliers,
multiple sources exist for almost all of the components of the Company's
products.
 
  The Company's manufacturing facilities in Austin, Texas, are currently
configured to assemble and test the SLS Systems. The Company believes that it
will have sufficient manufacturing capacity to fulfill demand for its SLS
Systems in 1997. The Company expects that it will lease additional space for
its operations in late 1997.
 
INTELLECTUAL PROPERTY
 
  The selective laser sintering technology was initially developed by
researchers at The University of Texas. The first selective laser sintering
patent was issued to The University of Texas in 1989. DTM has an exclusive
worldwide license from The University of Texas to use the selective laser
sintering technology (the "License"), the term of which continues until
expiration of the patent rights that are the subject of the License. The
License includes the original patents plus a right of first refusal for all
improvements thereon. It requires that DTM commercialize the technology, which
it has done and continues to do. Under the License, DTM is required to make
royalty payments equal to four percent of net sales of SLS Systems and certain
powdered materials. In connection with obtaining the License, the Company
issued 20,442 shares of Common Stock to The University of Texas. Under the
License, The University of Texas reserves the right to practice the patented
technology for research and educational purposes. The License can be
terminated by The University of Texas (i) if DTM becomes bankrupt or
insolvent, (ii) if DTM commits a material breach or default and fails to cure
that breach or default within 90 days of notice thereof or (iii) as to foreign
jurisdictions, after 1997, if DTM fails to commercialize the technology in
that jurisdiction. The License provides that DTM will indemnify The University
of Texas from expenses or damages incurred by The University of Texas arising
from DTM's use of the licensed subject matter.
 
  The Company has further refined and improved the selective laser sintering
process and materials and has been issued patents in its own name for many of
those developments. As of February 5, 1997, the Company owned or had exclusive
licenses to 25 U.S. patents and nine pending U.S. applications. As of the same
date, the Company owned or had exclusive licenses to four European patents,
five pending European applications and five international Patent Cooperation
Treaty applications. In addition, the Company owns or has exclusive rights to
seven issued patents and 19 pending applications in countries outside of the
United States and Europe. Technology that is covered by existing patents or is
the subject matter of pending patent applications includes some or all of the
following: (i) the fundamental elements of the selective laser sintering
process; (ii) related inventions on powder delivery, beam delivery and thermal
control; (iii) certain of the sintering powders that DTM has developed; (iv)
certain combinations of powdered materials; and (v) certain post-processing
steps for part finishing. Pending patent applications cover recent
developments in composite materials, as well as specially tailored powder
formulations that produce exceptional feature detail and surface finish. It is
anticipated that DTM will make additional patent application filings as a
result of research currently in progress.
 
  Some of the Company's patents have been acquired from third parties other
than The University of Texas. DTM acquired certain patents in the powdered
materials area through assignment from BFGoodrich in 1992. Also in 1992, DTM
acquired a patent that was originally issued to Ross Housholder in 1981. The
Company believes that the Housholder patent is a pioneer patent in the rapid
prototyping field.
 
  Most of the key claims of the U.S. patents covering selective laser
sintering, excluding the Housholder patent, have been submitted
internationally. The first European Patent Convention patent, which was issued
by the European Patent Office ("EPO") in December 1994, gives patent
protection in Austria, Belgium, France,
 
                                      34
<PAGE>
 
Germany, Italy, the Netherlands, Sweden, Switzerland and the United Kingdom.
However, this patent is the subject of an opposition proceeding before the EPO
that was initiated by a competitor of the Company. The competitor initially
alleged that the patent claims have been the subject of an unallowable
amendment and that the subject matter is not novel and does not involve an
inventive step. The Company received a favorable initial ruling from the EPO
in response to these allegations. However, the competitor has recently filed
papers before the EPO that again allege the patent is invalid, citing new
arguments for its positions. The Company has responded to these arguments and
intends to continue to defend the validity of this patent vigorously. The
Company is the plaintiff in a lawsuit in the United States involving claims of
infringement of certain of the Company's patents and has initiated similar
litigation in Europe. See "Business--Legal Proceedings."
 
  The Company has three trademarks registered with the U.S. Patent and
Trademark Office and has filed applications for registration in the United
States of an additional five trademarks.
 
LEGAL PROCEEDINGS
 
  DTM filed an action in the United States District Court for the Eastern
District of Wisconsin in October 1995 against three parties who are operating
an SLS System. DTM alleges that the defendants willfully infringed a DTM
patent. In June 1996, DTM amended its lawsuit to also assert that one of the
defendants breached an oral settlement agreement. The Company seeks injunctive
relief, damages and attorneys fees. The defendants have denied infringement
and the existence of an oral settlement agreement, and the defendants seek
attorneys fees. The defendants have also asserted the affirmative defenses of
patent invalidity, implied license, failure to mark patented articles, patent
unenforceability and invalidity of the oral settlement agreement. Discovery
commenced in late 1995. In a subsequent filing, one of the defendants also has
asserted claims against DTM and BFGoodrich for violation of state and federal
antitrust laws. That defendant seeks injunctive relief as well as damages and
attorneys fees. DTM and BFGoodrich have indicated that they believe that the
subsequent counter and cross claims for violation of antitrust laws are
without merit. It is not possible at this time to predict the outcome of this
proceeding, although a ruling unfavorable to the Company could have a material
adverse effect on the Company's business and financial performance.
 
  The Company initiated patent infringement litigation in March 1996 in the
3rd Chamber--1st section of the Court of Paris, France against EOS GmbH
("EOS"), a German competitor, against EOS S.A (France) and against one of
EOS's customers. The Company also initiated patent infringement litigation in
April 1996 in the County Court No. 1 in Munich, Germany against EOS and one of
EOS's customers, and in December 1996 initiated similar litigation in the
court of Pinerolo, Italy, against EOS and one of EOS's customers. In each of
these cases, the Company has alleged that EOS is selling rapid prototyping
systems in Europe that make unauthorized use of selective laser sintering
technology covered by the European patent under which DTM has exclusive
rights. The Company seeks injunctive relief plus damages. It is anticipated
that this litigation will be pursued in conjunction with the EPO proceeding in
which EOS has opposed the validity of that European patent. It is not possible
at this time to predict the outcome of these proceedings. See "Business--
Intellectual Property."
 
COMPETITION
 
  The market for rapid prototyping systems and materials is highly
competitive. Several United States-based companies other than DTM are in
various stages of developing and marketing rapid prototyping systems and
services. These companies include 3D Systems Corporation ("3D Systems"), BPM
Technology, Inc., Helisys, Inc. ("Helisys"), Sanders Prototype, Inc., Soligen
Technologies, Inc. and Stratasys, Inc. ("Stratasys"). Of these, 3D Systems,
Helisys and Stratasys compete with DTM on a worldwide basis. The Company also
faces competition in various regions outside North America from companies such
as EOS and several Japanese companies, including CMET (Mitsubishi) and D-MEC
(Sony-JSR).
 
  A number of the companies participating in the rapid prototyping industry
have developed or may be developing desk-top systems that are sold or will be
sold primarily on the basis of price. DTM believes that
 
                                      35
<PAGE>
 
these companies include 3D Systems, BPM Technology, Inc., Denken Engineering
Co., Ltd., Helisys, Kira Corporation, Sanders Prototype, Inc. and Stratasys,
among others. Their products are based on ink jet printing, plastic extrusion
or paper laser cutting and laminating technologies. The Company expects that
low-end products eventually will be priced at less than $50,000. Competing for
the low-end desk-top market segment is not part of the Company's business
strategy and the Company does not consider the desk-top systems to provide
competition in the high end of the market.
 
  The Company believes that its principal competitors for the plastic model,
functional prototype and pattern-creation segments of the rapid prototyping
market are 3D Systems, EOS and CMET (Mitsubishi). They employ a
stereolithography ("SLA")-based process that utilizes ultraviolet light
sources to polymerize liquid monomers into a solid plastic object. 3D Systems
was the first company to commercially introduce rapid prototyping technology.
The Company competes with 3D Systems on a worldwide basis and anticipates that
its competition with CMET (Mitsubishi) primarily will be confined to Japan.
EOS, located in Munich, Germany, markets systems based on both SLA and SLS
technologies, principally in Western Europe. EOS has been sued in Germany by
DTM for infringement of selective laser sintering technology patents. See
"Business--Intellectual Property" and "Business--Legal Proceedings." The
Company considers a process marketed by 3D Systems to be potential worldwide
competition for its RapidTool process and an EOS process to be a competitor of
the RapidTool process in Europe.
 
  The Company competes for business with other rapid prototyping companies
primarily on the basis of product performance, reliability, accuracy and
versatility, as well as price and product service. The Company also competes
for business with conventional machining and milling techniques, which
continue to be the most common methods by which plastic models, functional
prototypes and tool inserts are manufactured.
 
EMPLOYEES
 
  At December 31, 1996, the Company had 114 employees. Approximately 36.0
percent of the Company's employees are involved in engineering, research and
development and engineering product support. The remaining employees are
engaged in sales, marketing, finance and administration. None of the Company's
employees is represented by a union, and the Company has no prior experience
with a work stoppage. The future success of the Company depends on its ability
to attract and retain a qualified work force including employees with critical
engineering and selling skills.
 
FACILITIES
 
  The Company currently occupies a 30,000-square foot facility at 1611 Headway
Circle, Building 2, Austin, Texas. The Company's lease on this facility
expires November 30, 1997, at which time the Company has an option to renew
the lease at then-current market rates. This facility houses the bulk of the
Company's operations except for off-site sales offices located in various
areas of the United States and offices of the Company's German subsidiary,
which are leased. The Company also leases a warehouse in Austin, Texas,
primarily for the purpose of maintaining an inventory of selective laser
sintering powders. DTM expects that such facilities will be sufficient to
support the Company's operations through the remainder of 1997. The Company
expects that it will acquire additional space for its operations in late 1997.
See "Business--Manufacturing."
 
                                      36
<PAGE>
 
                                  MANAGEMENT
 
EXECUTIVE OFFICERS, DIRECTORS AND OTHER MANAGEMENT PERSONNEL
 
  The executive officers and directors of the Company and their ages as of
March 31, 1997 are set forth below. All directors were re-elected on March 18,
1997. The term of each director will continue until the 1998 annual meeting of
the Company's shareholders.
 
<TABLE>
<CAPTION>
 EXECUTIVE OFFICERS AND
       DIRECTORS          AGE                             POSITION
 ----------------------   ---                             --------
<S>                       <C> <C>
D. Lee Tobler...........   63 Chairman of the Board and Director
John S. Murchison, III..   56 Chief Executive Officer, President and Director
Michael A. Ervin,
 Ph.D. .................   54 Vice President, Engineering
Uday Bellary............   42 Vice President, Chief Financial Officer, Treasurer and Secretary
Thomas L. Lee...........   43 Vice President, Marketing
Marshall O. Larsen......   48 Director
Alexander MacLachlan....   64 Director
Thomas G. Ricks.........   44 Director
Steven G. Rolls.........   42 Director
<CAPTION>
    OTHER MANAGEMENT
       PERSONNEL
    ----------------
<S>                       <C> <C>
Klaus J. Esser..........   52 Vice President, European Sales, DTM GmbH
Kevin McAlea, Ph.D. ....   38 Director of Process and Materials Research
Dennis K Medler.........   50 Vice President, Pacific Rim and South American Sales
</TABLE>
 
  D. Lee Tobler is Chairman of the Board of the Company. He has served in that
capacity since March 1996 and as a director since September 1993. Mr. Tobler
is currently Executive Vice President and Chief Financial Officer of
BFGoodrich, the Company's majority shareholder, having joined BFGoodrich in
those capacities in early 1985 and having served as a director of BFGoodrich
since April 1988. Mr. Tobler is a member of the Company's Audit, Compensation
and Financial Policy Committees.
 
  John S. Murchison, III joined the Company as Chief Executive Officer and
President in September 1990. He was a Director of the Company from September
1990 through September 1993 and currently serves as a Director, having been
again elected as a member of the Board of Directors in March 1996. Prior to
joining the Company, Mr. Murchison was a General Manager for The Pratt Group,
a privately held Australian-based company with worldwide holdings in
packaging, insurance, banking and trading, from 1987 to 1990.
 
  Michael A. Ervin, Ph.D., the Company's Vice President, Engineering, joined
DTM in April 1993. He had 22 years of experience in manufacturing, research
and development with DuPont prior to joining DTM. Most recently, he was Vice
President of Research and Development for DuPont's Imaging System and Medical
Products Sector from 1990 to 1992.
 
  Uday Bellary joined the Company in February 1997 as Vice President, Chief
Financial Officer, Secretary and Treasurer. Prior to joining DTM, he served as
Director of Finance for Cirrus Logic, Inc., a manufacturer of semiconductor
chips, having served that company in various finance and accounting functions,
since May 1990. Prior to that, he was with Intel Corporation, Conner
Peripherals, Inc., Pritchard Services PLC and Price Waterhouse LLP. Mr.
Bellary is also a certified public accountant.
 
  Thomas L. Lee joined the Company in October 1995 as Vice President,
Marketing. From February 1993 to September 1995, Mr. Lee was a Marketing
Consultant for Foundation Marketing. He was a Division Marketing Manager for
Tektronix, Inc., a manufacturer of test and measurement instrumentation
systems from October 1991 to February 1993. From July 1990 to October 1991, he
was a marketing manager for Sequent Computer Systems. More than 12 years of
his career were spent in marketing and management roles at Intel Corporation.
 
                                      37
<PAGE>
 
  Marshall O. Larsen has served as a Director of the Company since January
1996. Mr. Larsen is the President and Chief Operating Officer of BFGoodrich
Aerospace, one of two major business segments of BFGoodrich. He joined
BFGoodrich in 1977 and has served in various managerial positions, including
assistant to the President, and most recently, Group Vice President,
BFGoodrich Aerospace. He is a member of the Company's Compensation and
Financial Policy Committees.
 
  Alexander MacLachlan has served as a Director of the Company since March
1996. From December 1994 to March 1996, Mr. MacLachlan served as Deputy Under
Secretary for the U.S. Department of Energy with oversight responsibilities
for technology transfer and laboratory operations. Prior to that time, he held
the position of Senior Vice President, Research and Development, and Chief
Technical Officer for DuPont beginning in 1986. He is a member of the
Company's Audit Committee.
 
  Thomas G. Ricks has served as a Director of the Company since May 1988. From
August 1991 to March 1996, he served as Chairman of the Board of the Company.
Since March 1996, he has served as President and Chief Executive Officer of
The University of Texas Investment Management Company, a non-profit
corporation engaged exclusively in providing investment management services to
the Board of Regents of The University of Texas, a minority shareholder in the
Company. From August 1988 through March 1996, he held several financial and
asset management positions at The University of Texas. Mr. Ricks serves as a
member of the Audit, Compensation and Financial Policy Committees of the Board
of Directors. Mr. Ricks also is a director of the Newfield Exploration Company
and BDM International, Inc.
 
  Steven G. Rolls has served as a Director of the Company since August 1994.
Mr. Rolls joined BFGoodrich as a Financial Analyst in 1981 and progressed
through a number of positions, including, most recently Vice President,
Finance of BFGoodrich Aerospace from 1989 until being elected Vice President
and Controller of BFGoodrich in 1993. He is a member of the Company's Audit
and Financial Policy Committees.
 
  Klaus J. Esser joined DTM GmbH in 1993 as Sales Engineer, Germany, and was
subsequently appointed Vice President, European Sales. Prior to joining DTM
GmbH, Mr. Esser was Sales Manager, Northern Europe, GUS and Middle East, with
3D Systems GmbH, having joined that company in 1989. Prior to working in the
rapid prototyping industry for DTM GmbH and 3D Systems GmbH, he served in
sales, technical service and engineering capacities for companies in the
automotive and materials testing fields.
 
  Kevin McAlea, Ph.D., has been the Director of Process and Materials Research
since joining DTM in March of 1993. Dr. McAlea is responsible for managing the
development of new selective laser sintering materials and applications.
Before joining DTM, he spent more than eight years in materials research and
development for General Electric Company ("GE"). His last position was
managing the Polymer Physics Program at GE's Corporate Research and
Development Center.
 
  Dennis K Medler joined the Company as Executive Vice President, Sales and
Marketing in September 1993, and was subsequently appointed as Vice President,
Pacific Rim and South American Sales in July 1995. He initially worked for DTM
as Vice President, Sales and Marketing from 1988 to 1990 as the Company
entered the rapid prototyping industry. From April 1991 to December 1992, Mr.
Medler served as Vice President, Sales and Marketing of 3D Systems and from
January 1993 to September 1993, he served in a similar position with Point
Control Company, a software company.
 
                                      38
<PAGE>
 
EXECUTIVE COMPENSATION
 
  The following table sets forth information concerning compensation of the
Company's Chief Executive Officer and its two other most highly compensated
executive officers (collectively, the "Named Officers") having annual cash
compensation of $100,000 or more for services rendered in all capacities to
the Company during the fiscal year ended December 31, 1996:
 
                          SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                             ANNUAL COMPENSATION   LONG TERM COMPENSATION
                             --------------------------------------------
                                                   SECURITIES UNDERLYING   ALL OTHER
NAME AND PRINCIPAL POSITION    SALARY      BONUS       OPTIONS(#)(1)      COMPENSATION
- ---------------------------  ------------ ------------------------------- ------------
<S>                          <C>          <C>      <C>                    <C>
John S. Murchison, III,
 President..............     $    150,000      --         100,528          $1,301(2)
Michael A. Ervin, Vice
 President,
 Engineering............          140,000      --          50,264                --
Thomas L. Lee, Vice
 President, Marketing...          120,000      --          21,990                --
</TABLE>
- --------
(1) Consists of immediately exercisable options to be issued upon conversion
    of SARs granted under the Equity Appreciation Plan in connection with the
    closing of the Offering described herein. The number of SARs granted was
    as follows: Murchison, 160,000 units; Ervin, 80,000 units; and Lee, 35,000
    units. See "Management--Equity Appreciation Plan."
(2) Consists of portions of club membership dues attributable to personal use.
 
  The following table sets forth information regarding the exercise and value
of EAP Options held at December 31, 1996 by the Named Officers:
 
  AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR END OPTION
                                    VALUES
 
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                 SECURITIES             VALUE OF
                                                                 UNDERLYING           UNEXERCISED
                                                                 UNEXERCISED          IN-THE-MONEY
                                                                 OPTIONS AT            OPTIONS AT
                                                             FISCAL YEAR END (#) FISCAL YEAR END ($)(1)
                                                             ------------------- ----------------------
                          SHARES ACQUIRED                       EXERCISABLE/          EXERCISABLE/
          NAME            ON EXERCISE (#) VALUE REALIZED ($)    UNEXERCISABLE        UNEXERCISABLE
          ----            --------------- ------------------ ------------------- ----------------------
<S>                       <C>             <C>                <C>                 <C>
John S. Murchison, III..        --               --               0/100,528            $0/580,224
Michael A. Ervin........        --               --                0/50,264             0/290,112
Thomas L. Lee...........        --               --                0/21,990             0/126,924
</TABLE>
- --------
(1) Represents the value of immediately exercisable EAP Options to be issued
    in connection with the closing of the Offering, at the Offering price of
    $8.00 per share less the weighted average exercise price of the EAP
    Options.
 
DIRECTOR COMPENSATION
 
  In March 1996, the Company instituted a program under which its non-
employee, non-affiliated directors are paid an annual retainer of $15,000, a
fee of $1,000 for each board meeting attended and a fee of $800 for each
committee meeting attended. The Company permits directors to defer all or part
of their compensation, if they so choose. Under these arrangements, the only
directors who are eligible to receive compensation are Messrs. Ricks and
MacLachlan. Mr. Ricks' compensation is payable to The University of Texas
Investment Management Company.
 
EQUITY APPRECIATION PLAN
 
  In January 1995, the Company established the DTM Corporation Equity
Appreciation Plan. An aggregate of 10,000,000 phantom stock units were created
thereunder, and 1,000,000 of such units were allocated for the
 
                                      39
<PAGE>
 
issuance of a like number of phantom stock appreciation rights ("SARs") to
employees of the Company. The value of each phantom stock unit as of any date
is equal to the fraction obtained by dividing the total value of the Company
(as determined under the Equity Appreciation Plan) as of such date by
10,000,000. The total value of DTM as of any date is deemed for purposes of
the Equity Appreciation Plan to be equal to a valuation of DTM, using a
methodology approved by the Board of Directors, as of the end of the
immediately preceding fiscal year made by an independent third party, subject
to approval of the Board of Directors.
 
  Of the 1,000,000 authorized SARs, 993,500 have been granted to eligible
employees and are outstanding as of the date of this Prospectus. All employees
of the Company participated in the Equity Appreciation Plan as of February 15,
1997. Each granted SAR represents the right to receive the dollar amount of
any appreciation in the value of one phantom stock unit between the date on
which the SAR is granted and the date on which it is exercised. While the SARs
are not exercisable until the occurrence of a "Change of Control" (as defined
in the Equity Appreciation Plan), upon the date of execution of the
underwriting agreement relating to the Offering (the "Conversion Date"), all
SARs then outstanding will convert into immediately exercisable options to
acquire Common Stock ("EAP Options"). The 993,500 SARs outstanding as of the
date of this Prospectus will convert into EAP Options to acquire an aggregate
of an estimated 624,224 shares of Common Stock. Options to purchase 507,045
shares of Common Stock (those options arising from the conversion of SARs
awarded in 1995) will be exercisable for $2.23 per share. The remaining
options to purchase 18,221 and 98,958 shares of Common Stock (those options
arising from the conversion of SARs awarded in 1996 and 1997) will be
exercisable for $14.67 and $13.53, respectively, per share. Each EAP Option
will continue to be exercisable through the tenth anniversary of the grant of
the SAR from which it was converted. Each holder of an EAP Option may exercise
it in full or in part. EAP Options are only exercisable for cash.
 
  The conversion of SARs into immediately exercisable EAP Options, certain of
which will have exercise prices substantially less than the market price per
share of Common Stock on the Conversion Date (such market price being deemed
for such purposes to be equal to the Offering price) will result in the
recognition by the Company of a non-recurring, non-cash compensation expense
measured by the difference between the aggregate market value of the shares of
Common Stock subject to such options and the aggregate exercise price of such
options (approximately $2.9 million). Such compensation expense is expected to
materially adversely affect operating results in the quarter and year in which
it becomes probable that the closing of the Offering will occur.
 
  In March 1996, the Board of Directors capped at 1,000,000 the aggregate
number of SARs that can be granted under the Equity Appreciation Plan.
 
STOCK OPTION PLAN
 
  In January 1996, the Company adopted the DTM Corporation Stock Option Plan
(the "Option Plan"), which authorizes the Compensation Committee of the Board
of Directors (the "Compensation Committee") to grant options to key management
employees to acquire up to 357,755 shares of Common Stock, at option prices of
not less than 100 percent of the fair market value of the Common Stock on the
date of grant. No options have been granted under the Option Plan.
 
  Under the Option Plan, options are granted upon terms and conditions
established by the Compensation Committee, which terms and conditions include
the option price, the term of the option (which in no event shall exceed 10
years), the status of the option as a non-incentive stock option, or an
incentive or other statutory stock option, the date on which the option will
first become exercisable, and the type of consideration that may be used to
exercise an option, which may include existing shares of the Common Stock.
Options granted under the Option Plan will vest in three separate installments
with 35 percent of the options granted becoming exercisable on the first
anniversary date of the option grant, 35 percent becoming exercisable on the
second anniversary date and 30 percent becoming exercisable on the third
anniversary date. The Compensation Committee also has the right to determine
the length of time, if any, following the termination of an optionee's
employment by reason of death, disability or retirement during which an
outstanding option may remain exercisable, except that in no
 
                                      40
<PAGE>
 
event may an option remain exercisable for more than 10 years after the date of
grant. The Option Plan also authorizes the Compensation Committee to grant
stock appreciation rights, pursuant to which stock options may be surrendered
to the Company in exchange for consideration equal to the difference between
the option price and the fair market value of the Common Stock on the date of
surrender.
 
  All grants of options will be subject to agreements between the Company and
the optionee, which will contain the terms and conditions of the option and
will bind the optionee to any temporary restrictions on sales of Common Stock
required by the underwriters in any public offering of the Common Stock.
 
MANAGEMENT INCENTIVE PLAN
 
  In January 1996, the Company adopted the DTM Corporation Management Incentive
Plan (the "MIP Plan"), which provides for the grant of incentive compensation
to key management employees who have the potential to positively influence the
performance of the Company, as a reward for levels of performance above the
ordinary performance standards compensated by base salary.
 
  Under the MIP Plan, each participant is assigned a "cash bonus target" of 20
to 50 percent of base salary, depending upon the management level of the
particular individual. Each year, the Compensation Committee creates corporate
performance measures, establishes targets for each such measure and, if it so
chooses, assigns different weights to each measure. The MIP Plan is structured
so that if each measure is met precisely, the MIP Plan establishes a bonus
equal to each individual's cash bonus target. If the performance measures are
exceeded, or if they are not met, a greater or lesser bonus is paid, depending
upon the extent to which actual performance varies from the performance target
and the weights given to the particular performance measures. Under the MIP
Plan, minimum thresholds are established that must be reached if any bonus is
to be paid. If the minimum thresholds are met or exceeded, the bonus payable
will be between 50 percent and 150 percent of the individual's cash bonus
target. The corporate performance measures that may be used by the Company in
any given year may include net income, pretax income, consolidated operating
income, operating income return on net capital employed, cash flow, working
capital, return on equity, return on assets and earnings per share. The
Compensation Committee and the Company's management have discretion to adjust
individual bonus payments up or down on a case-by-case basis.
 
  Prior to 1997, no amounts were payable under the MIP Plan. Targets for 1997
are based on net profit and free cash flow milestones. No payments are due to
be paid until early 1998, assuming threshold performance targets are met.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
  The Compensation Committee of the Board of Directors was formed in April
1990. During 1996, the members of the Compensation Committee were Messrs.
Larsen, Ricks and Tobler. The Compensation Committee oversees administration of
the Company's employee benefit plans and compensation policies.
 
                              CERTAIN TRANSACTIONS
 
SHAREHOLDERS' AGREEMENT
 
  The Company and all of its existing shareholders are parties to a
shareholders' agreement (the "Shareholders' Agreement") that was originally
entered into in March 1988, and has been amended periodically since that time,
having been significantly amended and restated in late 1989 in connection with
BFGoodrich's initial involvement in the Company, and amended and restated again
in April 1996. Most of the provisions of the Shareholders' Agreement will
terminate as of the completion of the Offering. The following summary of the
Shareholders' Agreement is qualified in its entirety by reference to the full
Shareholders' Agreement, which is filed as Exhibit 10.9 to the Registration
Statement of which this Prospectus is a part.
 
  Under the Shareholders' Agreement, the existing DTM shareholders have certain
rights of participation in public offerings by the Company of Common Stock,
sometimes referred to as "piggyback" registration rights.
 
                                       41
<PAGE>
 
These rights continue for the benefit of the parties to that agreement who are
not eligible to sell shares of Common Stock absent registration under the
Securities Act of 1933, as amended (the "Securities Act"). However, if the
underwriter of such an offering determines that not all shares tendered for a
public offering can be sold, then the shares tendered by each shareholder will
be reduced proportionately. Participating shareholders must enter into
underwriting agreements, make representations and share in registration and
filing fees. DTM is obligated to pay all other costs associated with a public
offering and must indemnify shareholders for certain liabilities that could
arise in the context of a registered public offering of Common Stock.
Shareholders have a reciprocal obligation of indemnification for information
supplied by them. Shareholders' registration rights terminate when two
conditions are met: (a) there is a public market for the Common Stock; and (b)
their Common Stock can be sold pursuant to Rule 144 under the Securities Act.
 
  One shareholder expressed interest in exercising its registration rights in
connection with the Common Stock offered at the time of the Offering. Its
shares have been included to the extent described herein. See "Principal and
Selling Shareholders." Following the Offering described herein, it is expected
that only BFGoodrich will have ongoing registration rights.
 
  Under the Shareholders' Agreement, shares of Common Stock are subject to
restrictions on transfer until such time as there is a public market for the
Common Stock. In addition, the Shareholders' Agreement contains a methodology
whereby the Common Stock can be valued in advance of the existence of a public
market for purposes of exercises of rights of first refusal and for certain
other purposes thereunder. The Shareholders' Agreement terminates
automatically, except for the obligations related to compliance with
securities laws on transfer and certain registration rights, when there is a
public market for the Common Stock, as defined in the Shareholders' Agreement.
The remaining provisions of the Shareholders' Agreement may be terminated only
by shareholders holding 85 percent of the outstanding shares subject to that
agreement.
 
  In April 1996, the Shareholders' Agreement was substantially amended and
restated. Provisions that had been amended or superseded, or that had expired,
either by agreement or the passage of time were deleted and various amendments
were incorporated. A provision allowing certain minority shareholders to
initiate an initial public offering of the Common Stock was deleted, with
BFGoodrich agreeing to deletion of a corresponding provision allowing it to
purchase minority shares in lieu of a shareholder-initiated initial public
offering. Special provisions granting BFGoodrich certain representation rights
on the Board of Directors, and committees thereof, were deleted. The survival
of registration rights after an initial public offering of the Common Stock
was limited to those parties who were parties to the Shareholders' Agreement
at the time of the amendment and restatement in April 1996. Finally, certain
rights to include minority shares in a sale of outstanding Common Stock were
revised to terminate at the time of an initial public offering.
 
INDEMNIFICATION AND LIABILITY OF OFFICERS AND DIRECTORS
 
  The Company's directors and officers are granted certain indemnities by
virtue of the Articles of Incorporation and Bylaws of the Company. Under the
Articles of Incorporation, directors cannot be held liable to shareholders for
monetary damages except in the event of breach of the duty of loyalty, bad
faith, intentional misconduct or knowing violations of law and certain other
specified events. The Bylaws of DTM also contain provisions consistent with
Texas law providing for indemnification of directors, officers, employees and
agents acting on behalf of the Company. There is no pending litigation or
proceeding involving a director or officer of the Company as to which
indemnification is being sought. The Company is not aware of any pending or
threatened litigation that could result in claims for indemnification by any
director or officer.
 
  Individuals who serve as directors and executive officers of the Company
have been included in the directors and officers insurance coverage of
BFGoodrich, as part of the insurance program that BFGoodrich maintains for its
business units and subsidiaries. However, the Company plans to transfer to
independent coverage effective upon the consummation of the Offering. DTM
directors who are also employees of BFGoodrich are entitled to indemnification
pursuant to BFGoodrich's bylaws. Furthermore, BFGoodrich's bylaws provide for
discretionary indemnification for certain other persons acting as officers or
directors of its subsidiaries.
 
                                      42
<PAGE>
 
BFGOODRICH DEBT CONVERSION
 
  BFGoodrich and the Company have agreed that, simultaneously with the closing
of the Offering, the Company will issue 187,500 shares of Common Stock to
BFGoodrich in satisfaction of $1.5 million of indebtedness owed to BFGoodrich
by the Company, effectively converting such indebtedness into Common Stock at
a price of $8.00 per share. The Company and BFGoodrich agreed to effect the
BFGoodrich Debt Conversion in order to enhance the Company's net tangible
assets (so as to exceed the Nasdaq National Market's quantitative designation
criteria in this regard) and its prospective covenant compliance under the
line of credit it expects to obtain from Texas Commerce Bank, as described
under "Management's Discussion and Analysis of Financial Condition and Results
of Operations--Liquidity and Capital Resources."
 
OUTSTANDING LINES OF CREDIT; FINANCING TRANSACTIONS
 
  The Company has outstanding lines of credit with NationsBank of Texas, N.A.
National City Bank of Cleveland, Ohio, and Texas Commerce Bank National
Association for $4.7 million, $3.5 million and $4.0 million, respectively. As
of March 31, 1997, the Company had outstanding $11.8 million under these
credit facilities. BFGoodrich has issued to NationsBank, National City Bank
and Texas Commerce Bank comfort letters on behalf of DTM in connection with
these credit lines. These lines of credit expire as of July 31, 1998. In
addition, BFGoodrich has provided to the Company an additional line of credit
in the amount of $4.0 million. As of March 31, 1997, the Company had
outstanding the full $4.0 million available under the BFGoodrich line of
credit. This line of credit bears interest at a rate equal to the prime
commercial lending rate of Citibank, N.A. The BFGoodrich line of credit
matures July 31, 1998 or, if earlier, at the time of completion of the
Offering of Common Stock described herein. The Company has committed to prepay
and terminate all of the borrowing facilities referred to above shortly
following completion of the Offering and the BFGoodrich Debt Conversion. The
Company plans to replace them with a stand-alone commercial borrowing facility
that would be available to finance its then current operations, including
temporary cash shortages, or to meet future, currently unforeseen cash needs.
See "Management's Discussion and Analysis of Financial Condition and Results
of Operations."
 
CERTAIN ARRANGEMENTS WITH BFGOODRICH
 
  The Company is a party to a tax allocation agreement with BFGoodrich. This
agreement provides for DTM to receive credit from BFGoodrich equal to the tax
benefit related to the losses DTM creates, to the extent that those losses are
utilized in the consolidated federal income tax return of BFGoodrich. As a
result of the sale of shares of Common Stock in the Offering described herein,
the ownership of outstanding Common Stock by BFGoodrich will decrease to less
than 80 percent. In that event, BFGoodrich will not be able to include DTM's
income or loss in BFGoodrich's consolidated federal income tax return
effective as of the time the 80 percent threshold is no longer met and,
consequently, DTM would lose the potential future benefit of the tax
allocation agreement between DTM and BFGoodrich. While DTM would be able to
use loss carryovers accrued during the time before the Company's taxes were
consolidated with those of BFGoodrich, these carryovers are subject to
significant annual limitations due to substantial changes in DTM's ownership.
 
  In addition, BFGoodrich currently provides tax administration services and
participation in a group program for various types of insurance on a regular
basis, along with certain treasury and legal assistance on a periodic basis.
These arrangements are provided either at no cost to the Company or on terms
that could be considered more favorable to the Company than those that would
be available to DTM in arms-length transactions with unrelated vendors,
principally because DTM is able to take advantage of cost efficiencies
experienced by BFGoodrich due to the size of its operations. The Company
expects that DTM will continue to participate in many of these arrangements
after the Offering, until such time as BFGoodrich no longer owns a significant
interest in the Company. However, DTM may be ineligible to take part in some
insurance programs and certain other arrangements once BFGoodrich no longer
owns a majority of the outstanding Common Stock. Either party has the option
to terminate any of such arrangements at any time. See "Risk Factors--Loss of
Tax Allocation Agreement and Other Benefits from BFGoodrich."
 
  As of December 31, 1996, the Company had payables outstanding to BFGoodrich
in the approximate amount of $614,000, relating to various transactions
involving income taxes, accrued interest, payroll taxes and certain insurance.
 
                                      43
<PAGE>
 
  In December 1992, BFGoodrich transferred to DTM the intellectual property
rights used in its business of developing and selling powdered materials for
SLS Systems, in exchange for Common Stock. In connection with that transfer,
BFGoodrich entered into a non-competition agreement with DTM, in which
BFGoodrich agreed not to compete with DTM in the development or manufacture of
materials for use in DTM's SLS Systems, or of selective laser sintering
systems themselves. This agreement will expire on the fifth anniversary of the
date that BFGoodrich no longer owns, directly or indirectly, more than 50
percent of DTM's voting stock.
 
CERTAIN MATTERS AFFECTING CORPORATE GOVERNANCE
 
  Mr. Ricks was elected to the Board of Directors pursuant to a license
agreement between the Company and The University of Texas, which agreement
grants The University of Texas the right to maintain one Director on the
Company's Board. The University of Texas, however, has agreed to the deletion
of that provision contemporaneously with the closing of the Offering. Until
the March 1996 annual meeting of the Company's shareholders, BFGoodrich had
the right, under the Shareholders' Agreement, to nominate directors
proportionate to its percentage ownership of outstanding Common Stock, subject
to the rights of The University of Texas to elect one director. Preceding the
1997 annual meeting of shareholders, BFGoodrich proposed the nomination of
Messrs. Larsen, MacLachlan, Murchison, Ricks, Rolls and Tobler. Messrs.
MacLachlan, Murchison and Ricks are not employees of BFGoodrich and have no
understandings with BFGoodrich in connection with their nomination or service
as directors of the Company. Messrs. Larsen, Rolls and Tobler are BFGoodrich
employees and serve on the Board of Directors at the request of BFGoodrich but
subject to the duties and responsibilities of directors under Texas corporate
law. Due to the large percentage of shares of Common Stock held by BFGoodrich,
BFGoodrich may be able to control the Board of Directors and could determine
the outcome of matters submitted to the Company's shareholders for their vote
or consent.
 
ROYALTIES
 
  In return for the exclusive, worldwide license from The University of Texas
for use of the selective laser sintering process patent, the Company is
obligated to pay The University of Texas a royalty equal to four percent of
net sales of SLS Systems and certain powdered materials. From the Company's
first commercial sale of an SLS System through December 31, 1994, DTM had paid
The University of Texas $134,000 of royalties attributable to sales of
licensed products. This amount was less than required under the License. Upon
the application of certain credits due DTM by The University of Texas, the
parties agreed that the net balance due The University of Texas from DTM as of
December 31, 1994 was $403,000, which was paid as agreed in eight quarterly
payments, plus interest, commencing in January 1995. Royalties on sales
commencing January 1, 1995 are paid currently in accordance with the terms of
the License. Through December 31, 1996, royalties to The University of Texas
paid or accrued by the Company totaled approximately $1.6 million. See
"Business--Intellectual Property."
 
                                      44
<PAGE>
 
                      PRINCIPAL AND SELLING SHAREHOLDERS
 
  The following table sets forth certain information regarding the beneficial
ownership of the Common Stock as of March 31, 1997 by (i) DTM Holdings, Ltd.
(the "Selling Shareholder") and the number of Shares to be sold by it, (ii)
each other person known to the Company to be the beneficial owner of more than
five percent of the outstanding Common Stock, (iii) each director of the
Company, (iv) each of the Named Officers and (v) all directors and executive
officers of the Company as a group. Except as otherwise indicated below, the
Company believes that each person listed below has sole voting and investment
power with respect to the shares owned, subject to applicable community
property laws. The address of each individual is in care of the Company, 1611
Headway Circle, Building 2, Austin, Texas 78754.
 
<TABLE>
<CAPTION>
                                SHARES BENEFICIALLY           SHARES BENEFICIALLY
                                OWNED PRIOR TO THE              OWNED AFTER THE
                                 OFFERING AND THE              OFFERING AND THE
                                    BFGOODRICH                    BFGOODRICH
                                DEBT CONVERSION(1)            DEBT CONVERSION(1)
NAME AND ADDRESS OF BENEFICIAL  -------------------   SHARES  ----------------------
  OWNER OR IDENTITY OF GROUP      NUMBER    PERCENT   OFFERED   NUMBER    PERCENT
- ------------------------------  ----------- -------   ------- ----------- ----------
<S>                             <C>         <C>       <C>     <C>         <C>
The BFGoodrich Company(2)..       2,969,690    91.55%     --    3,157,190    50.25%
 4020 Kinross Lakes Parkway
 Richfield, Ohio 44286-9368
DTM Holdings, Ltd.(3)......         192,547     5.94% 186,809       5,738        *
 c/o Bradley A. Fowler
 Financial Services Austin,
 Inc.
 707 Southwest Tower
 211 E. 7th Street
 Austin, TX 78701
D. Lee Tobler(4)...........       2,969,690    91.55%     --    3,157,190    50.25%
John S. Murchison, III(5)..         100,528     3.01%     --      100,528     1.57%
Michael A. Ervin(5)........          50,264     1.53%     --       50,264        *
Uday Bellary(5)............          50,264     1.53%     --       50,264        *
Thomas L. Lee(5)...........          21,990        *      --       21,990        *
Marshall O. Larsen(4)......       2,969,690    91.55%     --    3,157,190    50.25%
Alexander MacLachlan.......             --        --      --          --        --
Thomas G. Ricks(6).........          20,442        *      --       20,442        *
Steven G. Rolls(4).........       2,969,690    91.55%     --    3,157,190    50.25%
All directors and executive
 officers as a group
 (9 persons)...............       3,213,179    92.69%     --    3,400,679    52.27%
</TABLE>
- --------
 * Less than one percent.
(1) Beneficial ownership is determined in accordance with the rules of the
    Securities and Exchange Commission and generally includes voting or
    investment power with respect to securities. In accordance with such
    rules, EAP Options are assumed to be exercised to the extent held by the
    person whose beneficial ownership is shown.
(2) BFGoodrich will beneficially own 2,853,290 shares, 45.41% of those
    outstanding (or 41.33% assuming the exercise of all EAP Options), after
    the Offering (and the BFGoodrich Debt Conversion) if the Underwriters'
    over-allotment option is exercised in full.
(3) A Texas limited partnership of which Financial Services Austin, Inc. is
    the general partner and may be deemed the beneficial owner of such shares.
(4) Includes only shares owned by BFGoodrich, of which the director disclaims
    beneficial ownership.
(5) Represents for each individual shares of Common Stock issuable upon the
    exercise of EAP Options.
(6) Includes only shares owned by The University of Texas System, of which Mr.
    Ricks disclaims beneficial ownership.
 
                                      45
<PAGE>
 
                         DESCRIPTION OF CAPITAL STOCK
 
  The authorized capital stock of the Company consists of 60,000,000 shares of
Common Stock, $.0002 par value per share, of which 3,243,391 shares were
issued and outstanding as of March 31, 1997, and 3,000,000 shares of Preferred
Stock, $.001 par value per share, none of which have been issued. See
"Capitalization."
 
COMMON STOCK
 
  Holders of Common Stock are entitled to one vote per share on all matters to
be voted upon by the Company's shareholders. Holders of Common Stock are
entitled to receive ratably such dividends, if any, as may be declared by the
Board of Directors out of funds legally available therefor, after payment of
any dividends on any outstanding Preferred Stock. See "Dividend Policy." Upon
the liquidation, dissolution or winding up of the Company, the holders of
Common Stock are entitled to share ratably in all assets of the Company that
are legally available for distribution, after payment of all debts and other
liabilities and payment of any liquidation preference, if any, associated with
outstanding shares of Preferred Stock. Holders of Common Stock have no
preemptive, subscription, redemption or conversion rights. The outstanding
shares of Common Stock are, and the shares of Common Stock being sold by the
Company in the Offering will be, when issued and delivered, validly issued,
fully paid and nonassessable.
 
PREFERRED STOCK
 
  The Board of Directors is authorized, subject to any limitations prescribed
by the laws of the State of Texas, but without further action by the Company's
shareholders, to provide for the issuance of Preferred Stock in one or more
series, to establish from time to time the number of shares to be included in
each such series, to fix the designations, powers, preferences and rights of
the shares of each such series and any qualifications, limitations or
restrictions thereof, and to increase or decrease the number of shares of any
such series (but not below the number of shares of such series then
outstanding) without any further vote or action by the shareholders. The Board
of Directors may authorize and issue Preferred Stock with voting or conversion
rights that could adversely affect the voting power or other rights of the
holders of Common Stock. In addition, the issuance of Preferred Stock may have
the effect of delaying, deferring or preventing a change in control of the
Company. The Company has no current plan to issue any shares of Preferred
Stock.
 
CERTAIN PROVISIONS OF THE ARTICLES OF INCORPORATION
 
  The Company's Articles of Incorporation eliminate, to the fullest extent
permitted by law, the liability of its directors to the Company and its
shareholders for monetary damages for acts or omissions in the director's
capacity as such, except for liability (i) for breach of a duty of loyalty to
the Company or its shareholders, (ii) for acts or omissions not in good faith,
or which involve intentional misconduct or a knowing violation of law, (iii)
for receipt of improper benefits, (iv) where liability is expressly provided
for by statute or (v) for unlawful stock repurchases or dividend payments.
This provision is intended to afford the Company's directors the benefit of
the Texas Business Corporation Act, which provides that directors of Texas
corporations may be relieved of these types of liabilities. The Articles of
Incorporation further provide that directors receive the benefit of any future
amendment to Texas statutes that further limits the liability of a director.
 
TRANSFER AGENT AND REGISTRAR
 
  The Company has appointed Chase Mellon Shareholder Services L.L.C. as the
transfer agent and registrar for the Common Stock.
 
                                      46
<PAGE>
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
  Upon completion of the Offering, the Company will have 6,283,082 shares of
Common Stock outstanding. In addition to the shares of Common Stock that are
currently outstanding, options to acquire up to 624,224 shares of Common Stock
will be outstanding and immediately exercisable as of the completion of the
Offering under the Equity Appreciation Plan. See "Management--Equity
Appreciation Plan." In addition, a total of 357,755 shares of Common Stock
have been reserved for issuance under the Option Plan. The Company has not
granted any options under the Option Plan. See "Management--Stock Option
Plan." The Company plans to file Form S-8 registration statements for the
issuance of the shares issuable upon exercise of options granted under such
plans, with the result that shares so issued will be freely tradeable by the
holders thereof, subject, in certain cases, to the lock-up agreements
described below and, in the case of affiliates, to certain provisions of Rule
144. All of the 3,039,000 shares sold in the Offering (and any shares sold
upon exercise of the Underwriters' over-allotment option) will be freely
transferable by persons other than "affiliates" of the Company (as that term
is defined under the Securities Act) without restriction or further
registration under the Securities Act. The 187,500 shares of Common Stock
issued to BFGoodrich pursuant to the BFGoodrich Debt Conversion will, upon
expiration of the lock-up agreements, be freely tradeable, subject to certain
provisions of Rule 144.
 
  However, pursuant to the terms of the Underwriting Agreement, the
Underwriters have required current holders of the Common Stock to execute
agreements ("lock-up agreements") providing that they will not sell Common
Stock in the public markets for a period of 180 days from the date of this
Prospectus without the consent of the Representatives of the Underwriters. In
addition, all employees who hold options to acquire Common Stock under the
Equity Appreciation Plan have entered into similar agreements indicating that
they will not, without the consent of the Representatives of the Underwriters,
sell shares of Common Stock for a period of 180 days from the date of this
Prospectus.
 
  In general, under Rule 144 under the Securities Act ("Rule 144"), as
currently in effect, a person who has beneficially owned shares for at least
one year is entitled to sell, within any three-month period, a number of
"restricted" shares that does not exceed the greater of one percent of the
then outstanding shares of Common Stock (approximately 62,830 shares
immediately following the Offering) or the average weekly trading volume
during the four calendar weeks preceding such sale. Sales under Rule 144 also
are subject to certain manner of sale limitations, notice requirements and the
availability of current public information about the Company. Rule 144(k)
provides that a person who is not deemed an "affiliate" and who has
beneficially owned shares for at least two years is entitled to sell such
shares at any time under Rule 144 without regard to the limitations described
above. All of the shares outstanding prior to the Offering have met the two-
year holding period requirement under Rule 144 and will be eligible for sale
90 days after the Offering, subject to volume limitations applicable to sales
by affiliates. However, all existing shareholders have executed the lock-up
agreements described above.
 
  The Company is unable to estimate the number of shares that may be sold in
the future by its existing shareholders or employees exercising stock options
or the effect, if any, that sales of shares by such shareholders or employees
will have on the market price of Common Stock prevailing from time to time.
Sales of substantial amounts of Common Stock by existing shareholders or
employees exercising options could adversely affect prevailing market prices.
 
                                      47
<PAGE>
 
                                 UNDERWRITING
 
  The Underwriters named below have severally agreed with the Company and the
Selling Shareholder, subject to the terms and conditions of the Underwriting
Agreement, to purchase the respective numbers of shares of Common Stock set
forth opposite their names below.
 
<TABLE>
<CAPTION>
                                                                        NUMBER
      UNDERWRITER                                                      OF SHARES
      -----------                                                      ---------
      <S>                                                              <C>
      A.G. Edwards & Sons, Inc........................................   979,500
      Ladenburg Thalmann & Co. Inc....................................   979,500
      Alex. Brown & Sons Incorporated.................................    60,000
      Dillon, Read & Co. Inc..........................................    60,000
      Donaldson, Lufkin & Jenrette Securities Corporation.............    60,000
      Goldman, Sachs & Co.............................................    60,000
      Lehman Brothers.................................................    60,000
      Natwest Securities Corp.........................................    60,000
      Oppenheimer & Co. Inc...........................................    60,000
      PaineWebber Incorporated........................................    60,000
      Robertson, Stephens & Company, L.L.C............................    60,000
      Adams, Harkness & Hill, Inc.....................................    30,000
      Cruttenden Roth Incorporated....................................    30,000
      Fahnestock & Co. Inc............................................    30,000
      Gerard Klauer Mattison & Co., LLC...............................    30,000
      Hanifen, Imhoff Inc.............................................    30,000
      Edward Jones & Co., LP..........................................    30,000
      Legg Mason Wood Walker Incorporated.............................    30,000
      McDonald & Company Securities, Inc..............................    30,000
      Morgan Keegan & Company Inc.....................................    30,000
      Principal Financial Securities, Inc.............................    30,000
      Rauscher Pierce Refsnes, Inc....................................    30,000
      Raymond James & Associates, Inc.................................    30,000
      Southcoast Capital Corp.........................................    30,000
      Sutro & Co. Incorporated........................................    30,000
      Unterberg Harris................................................    30,000
      Vector Securities International, Inc............................    30,000
      Brean Murray, Foster Securities Inc.............................    15,000
      First Analysis Securities Corporation...........................    15,000
      Sanders Morris Mundy Inc........................................    15,000
      Starr Securities, Inc...........................................    15,000
                                                                       ---------
          Total....................................................... 3,039,000
                                                                       =========
</TABLE>
 
  The Underwriting Agreement provides that the Underwriters are obligated to
purchase all of the shares of Common Stock, if any are purchased.
 
  The Company has been advised by A.G. Edwards & Sons, Inc. and Ladenburg
Thalmann & Co. Inc., the Representatives of the several Underwriters (the
"Representatives"), that the Underwriters propose to offer the Common Stock to
the public at the offering price set forth on the cover page of this
Prospectus and to certain dealers at such price less a concession not in
excess of $.30 per share and that the Underwriters and such dealers may
reallow a discount of not in excess of $.10 per share to other dealers. The
public offering price and the concession and discount to dealers may be
changed by the Representatives after the Offering.
 
  In the Underwriting Agreement, BFGoodrich has granted the Underwriters an
option, expiring at the close of business on the 30th day subsequent to the
date of the Underwriting Agreement, to purchase up to 303,900
 
                                      48
<PAGE>
 
additional shares of Common Stock at the Offering price, less the underwriting
discount set forth on the cover page of this Prospectus. The Underwriters may
exercise such option solely to cover over-allotments, if any, in the sale of
the shares. To the extent the Underwriters exercise such option, each of the
Underwriters will have a firm commitment, subject to certain conditions, to
purchase approximately the same percentage of the option shares as the number
of shares to be purchased by it shown in the table above bears to 3,039,000,
and BFGoodrich will be obligated, pursuant to the option, to sell such shares
to the Underwriters.
 
  The Company, BFGoodrich and the Selling Shareholder have agreed to indemnify
the Underwriters against certain liabilities, including liabilities under the
Securities Act. The liability of BFGoodrich under this indemnity is limited to
the amount of the proceeds received by the Company, plus any proceeds received
by BFGoodrich from the sale of shares under the over-allotment option. The
liability of the other Selling Shareholder under this indemnity is limited to
the amount of its proceeds.
 
  The Company and all of its existing shareholders and SAR holders have agreed
that they will not, directly or indirectly, offer, sell or otherwise dispose
of any shares of Common Stock, other than the shares offered pursuant to this
Prospectus, for a period of 180 days from the date of this Prospectus without
the prior written consent of each of the Representatives. See "Shares Eligible
for Future Sale."
 
  The Representatives have advised the Company that they do not intend to
confirm sales to any account over which they exercise discretionary authority.
 
  In connection with the Offering, certain Underwriters and selling group
members and their respective affiliates may engage in transactions that
stabilize, maintain or otherwise affect the market price of the Common Stock.
Such transactions may include stabilization transactions effected in
accordance with Rule 104 of Regulation M, pursuant to which such persons may
bid for or purchase Common Stock for the purpose of stabilizing its market
price. The Underwriters also may create a short position for the account of
the Underwriters by selling more Common Stock in connection with the Offering
than they are committed to purchase from the Company and the Selling
Shareholder, and in such case may purchase Common Stock in the open market
following completion of the Offering to cover all or a portion of such short
position. The Underwriters may also cover all or a portion of such short
position, up to 303,900 shares of Common Stock, by exercising the
Underwriters' over-allotment option referred to above. In addition, A.G.
Edwards & Sons, Inc., on behalf of the Underwriters, may impose "penalty bids"
under contractual arrangements with the Underwriters whereby it may reclaim
from an Underwriter (or dealer participating in the offering) for the account
of the other Underwriters, the selling concession with respect to Common Stock
that is distributed in the Offering but subsequently purchased for the account
of the Underwriters in the open market. Any of the transactions described in
this paragraph may result in the maintenance of the price of the Common Stock
at a level above that which might otherwise prevail in the open market. None
of the transactions described in this paragraph is required, and, if they are
undertaken, they may be discontinued at any time.
 
  The Representatives have informed the Company that the Underwriters do not
intend to confirm sales to any accounts over which they exercise discretionary
authority.
 
  Prior to the Offering, there has been no public market for the Common Stock.
The Offering price for the Common Stock was determined by negotiation among
the Company and the Representatives. Among the factors considered in
determining the Offering price was the history of and the prospects for the
Company and the industry in which it operates, the past and present operating
results of the Company and the trends of such results, the future prospects of
the Company, an assessment of the Company's management, the general condition
for the securities markets at the time of the Offering and the prices for
similar securities of comparable companies.
 
                                      49
<PAGE>
 
                                 LEGAL MATTERS
 
  The legality of the issuance of the shares of Common Stock offered hereby
under Texas law and certain other legal matters will be passed upon for the
Company by Vinson & Elkins L.L.P., Dallas, Texas. Certain legal matters will
be passed upon for the Underwriters by Gardere & Wynne, L.L.P., Dallas, Texas.
 
                                    EXPERTS
 
  The consolidated financial statements of DTM Corporation at December 31,
1995 and 1996, and for each of the three years in the period ended December
31, 1996, appearing in this Prospectus and the Registration Statement have
been audited by Ernst & Young LLP, independent auditors, as set forth in their
report thereon appearing elsewhere herein, and are included in reliance upon
such report given upon the authority of such firm as experts in accounting and
auditing.
 
                            ADDITIONAL INFORMATION
 
  A Registration Statement on Form S-1 including amendments thereto relating
to the Common Stock offered hereby has been filed by the Company with the
Securities and Exchange Commission, Washington, D.C. This Prospectus does not
contain all of the information set forth in the Registration Statement and the
exhibits and schedules thereto. Statements contained in this Prospectus as to
the contents of any contract or other document referred to are not necessarily
complete and in each instance reference is made to the copy of such contract
or other document filed as an exhibit to the Registration Statement, each such
statement being qualified in all respects by such reference. For further
information with respect to the Company and the Common Stock offered hereby,
reference is made to such Registration Statement, exhibits and schedules. A
copy of the Registration Statement may be inspected by anyone without charge
at the Securities and Exchange Commission's principal office located at 450
Fifth Street, N.W., Room 1024, Washington, D.C. 20549, the New York Regional
Office located at 7 World Trade Center, Suite 1300, New York, New York 10048,
and the Chicago Regional Office located at Northwestern Atrium Center, 500
West Madison Street, Chicago, Illinois 60661-2511 and copies of all or any
part thereof may be obtained from the Public Reference Section of the
Securities and Exchange Commission upon the payment of certain fees prescribed
by the Securities and Exchange Commission. The Registration Statement may also
be obtained from the Web site that the Commission maintains at www.sec.gov.
 
  The Company intends to furnish its shareholders with annual reports
containing audited financial statements certified by an independent public
accounting firm and quarterly reports for each of the first three quarters of
each fiscal year containing unaudited financial information.
 
                                      50
<PAGE>
 
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                          PAGE
                                                                          ----
<S>                                                                       <C>
AUDITED FINANCIAL STATEMENTS
Report of Independent Auditors........................................... F-2
Consolidated Balance Sheets as of December 31, 1995 and 1996............. F-3
Consolidated Statements of Operations for the years ended December 31,
 1994, 1995 and 1996..................................................... F-4
Consolidated Statements of Shareholders' Equity (Deficit) for the years
 ended December 31, 1994, 1995 and 1996.................................. F-5
Consolidated Statements of Cash Flows for the years ended December 31,
 1994, 1995 and 1996..................................................... F-6
Notes to Consolidated Financial Statements............................... F-7
</TABLE>
 
 
                                      F-1
<PAGE>
 
                        REPORT OF INDEPENDENT AUDITORS
 
Board of Directors and Shareholders
DTM Corporation
 
  We have audited the consolidated balance sheets of DTM Corporation (a
majority-owned subsidiary of The B.F.Goodrich Company) and its subsidiary as
of December 31, 1995 and 1996, and the related consolidated statements of
operations, shareholders' equity (deficit) and cash flows for each of the
three years in the period ended December 31, 1996. These financial statements
are the responsibility of the Company's management. Our responsibility is to
express an opinion on these financial statements based on our audits.
 
  We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
 
  In our opinion, the financial statements referred to above present fairly,
in all material respects, the consolidated financial position of DTM
Corporation and its subsidiary at December 31, 1995 and 1996, and the
consolidated results of their operations and their cash flows for each of the
three years in the period ended December 31, 1996, in conformity with
generally accepted accounting principles.
 
                                            Ernst & Young LLP
 
Austin, Texas
February 13, 1997,
except for the stock split
information
in Note 1, as to which the
date is
April 2, 1997
 
                                      F-2
<PAGE>
 
                                DTM CORPORATION
 
                          CONSOLIDATED BALANCE SHEETS
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                               DECEMBER 31,
                                                             -----------------
                                                               1995     1996
                                                             --------  -------
<S>                                                          <C>       <C>
ASSETS
Current assets:
  Cash.....................................................  $    756  $   329
  Accounts receivable, net of allowance for doubtful
   accounts of $263 in 1995 and $640 in 1996...............     2,941    7,205
  Due from BFGoodrich......................................       381      --
  Inventory................................................     2,143    4,835
  Prepaid expenses and other...............................       372      595
                                                             --------  -------
Total current assets.......................................     6,593   12,964
Furniture and equipment, net...............................     2,647    3,057
Capitalized software development costs, net of accumulated
 amortization of $388 in 1995 and $292 in 1996.............       843      848
Patent and license fees, net of accumulated amortization of
 $470 in 1995 and $766 in 1996.............................       406      791
Other noncurrent assets....................................       150      237
                                                             --------  -------
Total assets...............................................  $ 10,639  $17,897
                                                             ========  =======
LIABILITIES AND SHAREHOLDERS' EQUITY (DEFICIT)
Current liabilities:
  Accounts payable.........................................  $  2,502  $ 5,845
  Due to BFGoodrich........................................       --       614
  Deferred revenues........................................       905    1,474
  Accrued expenses and other liabilities...................     2,074    2,640
  Short-term borrowings....................................       676      769
                                                             --------  -------
Total current liabilities..................................     6,157   11,342
Borrowings under line of credit from BFGoodrich............       200    4,000
Notes payable to banks.....................................     8,200   11,040
Commitments and contingencies (Note 10)....................
Shareholders' equity (deficit):
  Preferred stock, $.001 par value, 3,000,000 shares
   authorized, no shares issued and outstanding............       --       --
  Common stock, $.0002 par value, 60,000,000 shares
   authorized;
   3,243,391 shares issued and outstanding.................         1        1
  Additional paid-in capital...............................    28,019   28,019
  Accumulated deficit......................................   (31,980) (36,469)
  Cumulative translation adjustment........................        42      (36)
                                                             --------  -------
Total shareholders' equity (deficit).......................    (3,918)  (8,485)
                                                             --------  -------
Total liabilities and shareholders' equity (deficit).......  $ 10,639  $17,897
                                                             ========  =======
</TABLE>
 
                            See accompanying notes.
 
                                      F-3
<PAGE>
 
                                DTM CORPORATION
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                  YEAR ENDED DECEMBER 31,
                                                 ----------------------------
                                                  1994     1995       1996
                                                 -------  -------  ----------
<S>                                              <C>      <C>      <C>
Revenue:
  Products...................................... $ 8,127  $12,632  $   22,070
  Service and support...........................   1,112    1,579       2,309
                                                 -------  -------  ----------
                                                   9,239   14,211      24,379
Cost of sales:
  Products......................................   5,370    8,803      13,021
  Service and support...........................     511      873       1,424
                                                 -------  -------  ----------
                                                   5,881    9,676      14,445
                                                 -------  -------  ----------
Gross profit....................................   3,358    4,535       9,934
Operating expenses:
  Selling, general and administrative...........   5,249    6,620       9,980
  Research and development......................   3,840    3,521       4,292
                                                 -------  -------  ----------
                                                   9,089   10,141      14,272
                                                 -------  -------  ----------
Operating loss..................................  (5,731)  (5,606)     (4,338)
Other income (expense):
  Interest expense, net.........................    (178)    (530)     (1,066)
  Cost of discontinued registration.............     --       --         (752)
                                                 -------  -------  ----------
                                                    (178)    (530)     (1,818)
                                                 -------  -------  ----------
Loss before income tax benefit allocated from
 BFGoodrich.....................................  (5,909)  (6,136)     (6,156)
Income tax benefit allocated from BFGoodrich....   1,825    2,138       1,667
                                                 -------  -------  ----------
Net loss........................................ $(4,084) $(3,998) $   (4,489)
                                                 =======  =======  ==========
Pro forma, giving effect to stand-alone taxa-
 tion:
  Net loss......................................                   $   (6,156)
                                                                   ==========
  Net loss per share............................                   $    (1.71)
                                                                   ==========
  Number of shares used.........................                    3,609,211
                                                                   ==========
</TABLE>
 
 
                            See accompanying notes.
 
                                      F-4
<PAGE>
 
                                DTM CORPORATION
 
           CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT)
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                          ADDITIONAL             CUMULATIVE
                                   COMMON  PAID-IN   ACCUMULATED TRANSLATION
                          SHARES   STOCK   CAPITAL     DEFICIT   ADJUSTMENT   TOTAL
                         --------- ------ ---------- ----------- ----------- -------
<S>                      <C>       <C>    <C>        <C>         <C>         <C>
Balance at January 1,
 1994................... 3,243,391  $ 1    $28,019    $(23,898)     $(44)    $ 4,078
  Net loss..............       --   --         --       (4,084)      --       (4,084)
  Translation adjust-
   ment.................       --   --         --          --         50          50
                         ---------  ---    -------    --------      ----     -------
Balance at December 31,
 1994................... 3,243,391    1     28,019     (27,982)        6          44
  Net loss..............       --   --         --       (3,998)      --       (3,998)
  Translation adjust-
   ment.................       --   --         --          --         36          36
                         ---------  ---    -------    --------      ----     -------
Balance at December 31,
 1995................... 3,243,391    1     28,019     (31,980)       42      (3,918)
  Net loss..............       --   --         --       (4,489)      --       (4,489)
  Translation adjust-
   ment.................       --   --         --          --        (78)        (78)
                         ---------  ---    -------    --------      ----     -------
Balance at December 31,
 1996................... 3,243,391  $ 1    $28,019    $(36,469)     $(36)    $(8,485)
                         =========  ===    =======    ========      ====     =======
</TABLE>
 
 
                            See accompanying notes.
 
                                      F-5
<PAGE>
 
                                DTM CORPORATION
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                    YEAR ENDED DECEMBER 31,
                                                    -------------------------
                                                     1994     1995     1996
                                                    -------  -------  -------
<S>                                                 <C>      <C>      <C>
OPERATING ACTIVITIES
Net loss........................................... $(4,084) $(3,998) $(4,489)
Adjustments to reconcile net loss to net cash used
 in operating activities:
  Depreciation and amortization....................   2,292    2,487    2,170
  Loss on disposal of equipment....................      34       32      --
  Changes in assets and liabilities used in
   operating activities:
    Accounts receivable............................     854   (1,314)  (4,264)
    Inventory......................................    (182)     157   (2,692)
    Due to/from BFGoodrich.........................     326   (1,064)     995
    Prepaid expenses and other assets..............      19      (90)    (310)
    Accounts payable...............................    (302)   1,469    3,343
    Deferred revenues..............................     (64)     103      569
    Accrued expenses and other liabilities.........    (656)     654      566
                                                    -------  -------  -------
Net cash used in operating activities..............  (1,763)  (1,564)  (4,112)
INVESTING ACTIVITIES
Purchases of furniture and equipment...............    (757)  (1,674)  (1,898)
Capitalized software development costs.............    (325)    (440)    (374)
Patent and license expenditures....................    (362)    (247)    (698)
                                                    -------  -------  -------
Net cash used in investing activities..............  (1,444)  (2,361)  (2,970)
FINANCING ACTIVITIES
Proceeds from notes payable........................   1,600    3,600      --
Proceeds from short-term borrowings................     --     2,681    3,448
Repayments of short-term borrowings ...............     --    (2,005)  (3,355)
Draws on line of credit from financial
 institutions......................................     --       --     2,840
Draws on line of credit from BFGoodrich............     --       200    3,800
                                                    -------  -------  -------
Net cash provided by financing activities..........   1,600    4,476    6,733
Effect of foreign exchange rate changes on cash....      50       36      (78)
                                                    -------  -------  -------
Net increase (decrease) in cash....................  (1,557)     587     (427)
Cash at beginning of year..........................   1,726      169      756
                                                    -------  -------  -------
Cash at end of year................................ $   169  $   756  $   329
                                                    =======  =======  =======
</TABLE>
 
                            See accompanying notes.
 
                                      F-6
<PAGE>
 
                                DTM CORPORATION
 
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
                               DECEMBER 31, 1996
 
1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES
 
 Organization
 
  DTM Corporation ("DTM" or the "Company") was formed in November 1987.
Through the proprietary and patented selective laser sintering process, the
Company is engaged in the development, design, manufacture, marketing and
support of rapid prototyping and rapid tooling systems. This technology,
exclusively licensed to DTM by The University of Texas, enables the
fabrication of three-dimensional solid models, prototypes or tool inserts
directly from three-dimensional computer aided design ("CAD") data. The
Company's products, related materials and maintenance and support services are
available to the worldwide, rapid prototyping market. The financial statements
include the accounts of DTM GmbH, a wholly-owned German subsidiary. All
significant intercompany accounts and transactions have been eliminated.
 
  At December 31, 1996, DTM was approximately 92 percent owned by The
B.F.Goodrich Company ("BFGoodrich"). DTM has continued to incur operating
losses and cash flow deficiencies. As a result, DTM is substantially reliant
upon BFGoodrich for capital funding or other financial assistance to enable
DTM to meet its financial obligations. DTM has been advised by management of
BFGoodrich that it is BFGoodrich's current intention to assure that DTM
secures financial resources on an as-needed basis to meet its financial
obligations, until the successful completion of an initial public offering
("IPO") of the Company's common stock or the Company otherwise develops
financial resources to meet its current financial obligations.
 
  BFGoodrich provides DTM with tax administration services, participation in a
group program for various types of insurance and certain other assistance,
including legal services. These arrangements are provided either at no cost to
the Company or on terms that could be considered more favorable to the Company
than those that would be available to DTM in arms-length transactions. The
cost of these services is not reflected in the accompanying financial
statements as estimates of these costs are insignificant to the results of
operations of each period presented.
 
 Use of Estimates
 
  The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.
 
 Inventory
 
  Inventories are carried at the lower of cost or market, with cost determined
using the first-in, first-out (FIFO)
method.
 
 Furniture and Equipment
 
  Furniture and equipment is carried at cost less accumulated depreciation.
Depreciation expense is calculated on the straight-line method over the useful
life of each asset, which lives range from three to five years. Leasehold
improvements are amortized on the straight-line method over the life of the
related lease or the useful life of the respective asset, whichever is
shorter.
 
 Capitalized Software Development Costs
 
  The Company's principal products include a software component. Costs
incurred in the development of software, once technological feasibility has
been established but prior to general release to customers, are capitalized.
Technological feasibility is established when a product design and working
model of the software product have been completed and when the completeness of
the working model and its consistency with the
 
                                      F-7
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
 
1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
product design have been confirmed by testing. Amortization is provided on a
product by product basis at the greater of amortization based on the estimated
revenues of the products or the straight-line amortization over their
estimated economic lives of not more than three years. DTM capitalized
software development costs of $325,000 in 1994, $440,000 in 1995 and $374,000
in 1996. Amortization of capitalized software development costs totaled
$537,000 in 1994, $561,000 in 1995 and $369,000 in 1996. Amortization is
included in cost of product sales in the consolidated statements of
operations.
 
 Patent and License Fees
 
  Patent and license fees represent the costs associated with filing and
maintaining patent applications and obtaining, maintaining and defending
rights under patents under which DTM operates. DTM capitalized patent and
license fees of $362,000 in 1994, $247,000 in 1995 and $698,000 in 1996. These
fees are amortized for accounting purposes over a five-year estimated economic
useful life utilizing the straight-line method and are included in selling,
general and administrative expense.
 
 Translation of Foreign Subsidiary Financial Statements
 
  The financial statements of DTM GmbH (a wholly-owned subsidiary located in
Germany) are translated to U.S. dollars substantially as follows: all assets
and liabilities at year-end exchange rates; sales and expenses at average
exchange rates; and shareholders' equity at historical exchange rates. Gains
and losses from translating the financial statements of DTM GmbH are recorded
directly in shareholders' equity.
 
 Recognition of Revenue
 
  Revenues from the sale of SLS systems are recognized when title has
transferred to the customer, when the Company's remaining obligations are
insignificant and when collectibility of the related receivable is probable,
which is upon shipment. The Company defers from three to six percent of the
revenues, excluding certain accessories, from each SLS system sale for
warranty service. This deferred amount represents the Company's estimate of
the cost of providing such warranty service and is recognized ratably as
service and support revenue over the 12-month warranty period.
 
  Upon expiration of the 12-month warranty period discussed above, the Company
offers for sale to its customers an annual maintenance contract, the revenues
from which are recognized ratably as service and support revenue over the
related support period.
 
 Pro Forma Net Loss Per Share
 
  Pro forma net loss per share for the year ended December 31, 1996 was
calculated on a stand-alone basis without allocation of the income tax benefit
from BFGoodrich using the weighted average number of common shares outstanding
plus the number of shares under options (certain of which will have exercise
prices substantially less than the Offering price) that will be outstanding
under the Equity Appreciation Plan (see Note 11) upon completion of an initial
public offering of the Company's common stock (see Note 15). In addition, an
effective 1.022-for-1 stock split, effected by the Company as a series of
recapitalizations completed on April 2, 1997, has been retroactively applied
to all share and per share amounts. Historical per share amounts are not
presented because DTM is a majority-owned subsidiary of BFGoodrich.
 
 Concentration of Credit Risk
 
  The Company sells its products and services to companies in diversified
industries. Credit is extended based on an evaluation of each customer's
financial condition, generally without requiring collateral. The Company
monitors its exposure to credit losses and maintains allowances for potential
losses.
 
                                      F-8
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
 
1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
 Dependence on Third-Party Suppliers
 
  The Company subcontracts for the manufacture of product sub-assemblies from
single-source, third-party suppliers. In addition, the Company has adopted a
"just-in-time" inventory system for product sub-assemblies and relies on
suppliers to provide components on a timely basis.
 
 Advertising Costs
 
  Advertising costs, which are expensed as incurred, were $346,000 in 1994,
$596,000 in 1995 and $757,000 in 1996.
 
 Stock-Based Compensation
 
  The Company accounts for stock-based employee compensation in accordance
with the provisions of APB Opinion No. 25, "Accounting for Stock Issued to
Employees," and related Interpretations.
 
 Income Taxes
 
  The Company accounts for income taxes using Financial Accounting Standards
No. 109, "Accounting for Income Taxes." Under Statement 109, the liability
method is used in accounting for income taxes. Under this method, deferred tax
assets and liabilities are determined based on differences between financial
reporting and tax bases of assets and liabilities and are measured using the
enacted tax rates and laws that will be in effect when the differences are
expected to reverse.
 
 Fair Value of Financial Instruments
 
  The Company believes that the carrying amount of its financial instruments,
including debt, approximates fair value. Fair value is estimated based on
quoted market prices for similar instruments.
 
2. ALLOWANCE FOR DOUBTFUL ACCOUNTS
 
  The Company maintains an allowance for doubtful accounts related to its
trade accounts receivable. The activity in this allowance account for the
years ended December 31, is as follows (in thousands):
 
<TABLE>
<CAPTION>
                                     BALANCE AT CHARGES TO            BALANCE AT
                                     BEGINNING  COSTS AND               END OF
                                     OF PERIOD   EXPENSES  WRITE-OFFS   PERIOD
                                     ---------- ---------- ---------- ----------
   <S>                               <C>        <C>        <C>        <C>
   1994.............................    $150       $75        $21        $204
   1995.............................     204        60          1         263
   1996.............................     263       389         12         640
</TABLE>
 
3. INVENTORY
 
  Inventory at December 31 consisted of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                    1995   1996
                                                                   ------ ------
   <S>                                                             <C>    <C>
   Raw materials and purchased parts.............................. $1,423 $3,187
   Finished goods.................................................    720  1,648
                                                                   ------ ------
                                                                   $2,143 $4,835
                                                                   ====== ======
</TABLE>
 
                                      F-9
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
 
4. FURNITURE AND EQUIPMENT
 
  Furniture and equipment at December 31 consisted of the following (in
thousands):
 
<TABLE>
<CAPTION>
                                                                1995     1996
                                                               -------  -------
   <S>                                                         <C>      <C>
   Equipment.................................................. $ 5,977  $ 7,437
   Leasehold improvements.....................................   1,289    1,366
   Office furniture...........................................     347      356
                                                               -------  -------
                                                                 7,613    9,159
   Less accumulated depreciation and amortization.............  (4,966)  (6,102)
                                                               -------  -------
                                                               $ 2,647  $ 3,057
                                                               =======  =======
</TABLE>
 
5. PATENT AND LICENSE AGREEMENTS
 
  On December 3, 1987, DTM entered into a patent license agreement with the
Board of Regents of The University of Texas System, whereby DTM is licensed to
make, have made and sell products utilizing the selective laser sintering
technology. In consideration of rights granted in the license agreement, DTM
issued 20,442 shares of its common stock to The University of Texas System.
 
  The agreement provides for royalty payments in the amount of four percent of
DTM's net sales for products covered by the license agreement (gross receipts
net of commissions, returns, freight, discounts and sales taxes). Royalty
expense, included in cost of sales, was $296,000 in 1994, $424,000 in 1995 and
$676,000 in 1996.
 
  The Company evaluates the carrying values of patents and licenses to
determine if the facts and circumstances suggest that they may be impaired. If
this review indicates that patents and licenses will not be recoverable, as
determined based on the undiscounted cash flows of the entity over the
remaining amortization period, the carrying value of the patents and licenses
will be reduced accordingly.
 
6. ACCRUED EXPENSES AND OTHER LIABILITIES
 
  Accrued expenses and other liabilities consist of the following as of
December 31 (in thousands):
 
<TABLE>
<CAPTION>
                                                                   1995   1996
                                                                  ------ ------
   <S>                                                            <C>    <C>
   Royalties..................................................... $  491 $  360
   Payroll and related accruals..................................    431    525
   Other.........................................................  1,152  1,755
                                                                  ------ ------
                                                                  $2,074 $2,640
                                                                  ====== ======
</TABLE>
 
7. FINANCING ARRANGEMENTS
 
 Line of Credit with BFGoodrich
 
  In November 1995, the Company entered into a line of credit agreement with
BFGoodrich under which the Company may borrow up to $2,000,000. During 1996,
the amount which the Company may borrow was increased to $4,000,000. The line
bears interest at the prime commercial lending rate of Citibank, N.A. (8.5
percent at December 31, 1996) and matures on the earlier of July 31, 1998 or
the date upon which the Company receives any proceeds from an IPO of the
Company's common stock. At December 31, 1995 and 1996, $200,000 and
$4,000,000, respectively, was outstanding under this agreement.
 
                                     F-10
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
7. FINANCING ARRANGEMENTS (CONTINUED)
 
 Short-Term Borrowings
 
  At December 31, 1995 and 1996, DTM had a total of $676,000 and $769,000,
respectively, of short-term debt outstanding under the terms of a financing
arrangement with a leasing company. The weighted average interest rates on
outstanding short-term borrowings were 19 and 20 percent at December 31, 1995
and 1996, respectively. The weighted average interest rates during 1995 and
1996 were 18 and 21 percent, respectively. The debt is collateralized by
certain equipment and accounts receivable.
 
 Notes Payable to Banks
 
  At December 31, 1995, DTM had lines of credit with two banks under unsecured
promissory notes with available borrowings of $8,200,000. During 1996, DTM
obtained a third line of credit with a third bank under an unsecured
promissory note with available borrowings of $4,000,000. The combined
available borrowings for these lines of credit is $12,200,000, of which
$11,040,000 was outstanding as of December 31, 1996. BFGoodrich has provided
letters of comfort to each of these banks upon which the banks have relied in
providing credit to DTM. The notes mature on July 31, 1998 but the Company has
committed to pay them on the successful completion of an IPO. Interest on the
notes is payable monthly, determined on an advance-by-advance basis; and, at
the Company's election, may be based on each bank's then current prime rate,
CD rate or Eurodollar rate. Interest rates and outstanding balances on notes
payable at December 31, 1995 and 1996 were as follows:
 
<TABLE>
<CAPTION>
                  1995                                                  1996
      --------------------------------                  --------------------------------------
      INTEREST            OUTSTANDING                   INTEREST                   OUTSTANDING
       RATES              BORROWINGS                     RATES                     BORROWINGS
      --------            -----------                   --------                   -----------
      <S>                 <C>                           <C>                        <C>
        6.5%              $4,700,000                      6.2%                     $ 4,700,000
        6.4%               2,800,000                      6.2%                       3,500,000
        8.5%                 700,000                       --                              --
                                  --                      6.2%                       2,840,000
                          ----------                                               -----------
                          $8,200,000                                               $11,040,000
                          ==========                                               ===========
</TABLE>
 
Interest paid in connection with all of the above financing arrangements was
approximately $212,000 in 1994, $451,000 in 1995 and $1,079,000 in 1996
(approximately $153,000 of which was paid to BFGoodrich in 1996).
 
8. COST OF DISCONTINUED REGISTRATION
 
  During 1996, DTM attempted an IPO. However, due to market volatility and
other issues the IPO was postponed. The Company incurred approximately
$752,000 of legal, accounting and other professional services related to the
unsuccessful IPO which were expensed in the fourth quarter.
 
9. INCOME TAXES
 
  Since October 31, 1990, DTM has been included in the consolidated federal
tax return of BFGoodrich. Accordingly, for all periods since that date, the
Company has recorded the tax benefit allocated to it by BFGoodrich, which
credits the Company with a tax benefit approximating the benefit that
BFGoodrich derives from the consolidation of the Company. Such benefits are
generally paid to the Company by BFGoodrich on a current basis. Should
BFGoodrich's ownership interest fall below 80 percent, such benefits will no
longer be available to the Company. Based on the tax sharing agreement, if
BFGoodrich loses part of the tax benefit of any losses previously utilized or
has to report additional income as the result of a federal tax audit of DTM,
DTM will be required to reimburse BFGoodrich for any additional taxes paid.
 
                                     F-11
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
9. INCOME TAXES (CONTINUED)
 
  DTM has net operating loss carryforwards totaling approximately $4,200,000
for federal income tax purposes, incurred from inception to October 31, 1990.
These carryforwards expire in the years 2002 to 2004 and, although available
to DTM, should DTM subsequently file a federal income tax return separate from
BFGoodrich, are subject to significant annual limitations due to substantial
changes in DTM's ownership.
 
  Deferred income taxes reflect the net tax effects of temporary differences
between the carrying amounts of assets and liabilities of DTM for financial
reporting purposes and the amounts used for income tax purposes. Significant
components of the Company's deferred tax liabilities and assets as of December
31, 1995 and 1996 are as follows (in thousands):
<TABLE>
<CAPTION>
                                                              DECEMBER 31,
                                                             ----------------
                                                              1995     1996
                                                             -------  -------
   <S>                                                       <C>      <C>
   Deferred tax assets:
     Book over tax depreciation and amortization............ $    91  $   206
     Allowance for doubtful accounts........................      92      224
     Net operating loss carryforwards (for periods prior to
      October 31, 1990).....................................   1,470    1,470
     Other..................................................     115      106
                                                             -------  -------
   Total deferred tax assets................................   1,768    2,006
   Valuation allowance for deferred tax assets..............  (1,478)  (1,599)
                                                             -------  -------
                                                                 290      407
   Deferred tax liabilities:
     Deferred revenue.......................................     290      407
                                                             -------  -------
   Total deferred tax liabilities...........................     290      407
                                                             -------  -------
   Net deferred tax assets.................................. $   --   $   --
                                                             =======  =======
</TABLE>
 
  A reconciliation of income tax benefit calculated at the statutory rate and
the provision for income tax benefit is as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                   YEARS ENDED DECEMBER 31,
                                                  ----------------------------
                                                    1994      1995      1996
                                                  --------  --------  --------
<S>                                               <C>       <C>       <C>
Income tax benefit at the federal statutory rate
 (34%)..........................................  $  2,009  $  2,086  $  2,093
Net operating loss not utilized by the Company..    (2,009)   (2,086)   (2,093)
Income tax benefit allocated from BFGoodrich....     1,825     2,138     1,667
                                                  --------  --------  --------
                                                  $  1,825  $  2,138  $  1,667
                                                  ========  ========  ========
</TABLE>
 
  BFGoodrich files a consolidated federal income tax return which includes all
of its eligible subsidiaries, including the Company. If federal taxes were
computed assuming the Company filed a separate federal income tax return, no
benefit would be available to the Company. Accordingly, without the tax
benefit allocated from BFGoodrich, the Company's net loss for the year ended
December 31, 1996 would have been $6,156,000, or a loss of $1.71 per share,
and has been reflected in the pro forma amounts presented in the consolidated
statements of operations.
 
  As a result of the Offering described herein, the ownership of outstanding
Common Stock by BFGoodrich will decrease to less than 80 percent. Effective as
of the date that such decrease occurs, BFGoodrich will no
 
                                     F-12
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
9. INCOME TAXES (CONTINUED)
 
longer be able to include DTM'S income or loss in BFGoodrich's consolidated
federal income tax return; consequently, DTM will lose the benefit of the tax
allocation agreement between DTM and BFGoodrich. BFGoodrich credits to the
Company the amount of any benefits realized by BFGoodrich as a result of the
inclusion of DTM'S losses and/or tax credits in BFGoodrich's consolidated
federal income tax return.
 
10. COMMITMENTS AND CONTINGENCIES
 
  DTM leases facilities and equipment under noncancelable operating leases,
expiring primarily in 1997. Total rent expense incurred under these leases was
approximately $246,000 in 1994, $252,000 in 1995 and $332,000 in 1996. Future
minimum payments under these leases are as follows (in thousands):
 
<TABLE>
         <S>                                                <C>
         1997.............................................. $281
         1998..............................................   22
         1999..............................................    7
</TABLE>
 
  As of December 31, 1996, the Company had purchase commitments for inventory
totaling approximately $3,257,000.
 
  In the ordinary course of business, the Company is subject to legal
proceedings and claims. In one such instance, DTM filed an action in the
United States District Court for the Eastern District of Wisconsin in October
1995 against three parties who are operating an SLS System. DTM alleges that
the defendants willfully infringed a DTM patent. In June 1996, DTM amended its
lawsuit to also assert that one of the defendants breached an oral settlement
agreement. The Company seeks injunctive relief, damages and attorneys fees.
The defendants have denied infringement and the existence of an oral
settlement agreement, and the defendants seek attorneys fees. The defendants
have also asserted the affirmative defenses of patent invalidity, implied
license, failure to mark patented articles, patent unenforceability and
invalidity of the oral settlement agreement. Discovery commenced in late 1995.
In a subsequent filing, one of the defendants also has asserted claims against
DTM and BFGoodrich for violation of state and federal antitrust laws. That
defendant seeks injunctive relief as well as damages and attorneys fees. It is
not possible at this time to predict the outcome of this proceeding, although
DTM and BFGoodrich have indicated that they believe that the subsequent
counter and cross claims for violation of antitrust laws are without merit.
However, a ruling unfavorable to the Company could have a material adverse
effect on the Company's business and financial performance.
 
11. EQUITY APPRECIATION PLAN
 
  In January 1995, the Board of Directors approved the DTM Corporation Equity
Appreciation Plan (the "SAR Plan"), which created 10,000,000 Phantom Stock
Units. Ten percent of the Phantom Stock Units were allocated for the issuance
of a like number of Phantom Stock Appreciation Rights ("SARs") under the SAR
Plan to eligible employees. Each SAR granted to a Participant will vest and
become exercisable upon, but not prior to, a "Change in Control" of DTM. A
Change in Control of DTM shall be deemed to have occurred either: (1) when
common stock of DTM is issued to the public in an IPO; or (2) BFGoodrich is no
longer the owner of at least 50 percent of the outstanding common stock of DTM
as a result of an arms-length sale of all or a part of its interest in DTM to
a third party not affiliated or associated with BFGoodrich. If the Change in
Control results from an IPO, the SARs will immediately convert to fully vested
options to purchase common stock of the Company. If the Change in Control
occurs as the result of a sale of all or a part of BFGoodrich's interest in
DTM to a third party, the SARs will become immediately exercisable; and, a
Participant may exercise an SAR by providing written notice to DTM whereupon
the Participant will receive a cash amount equal to the
 
                                     F-13
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
11. EQUITY APPRECIATION PLAN (CONTINUED)
 
appreciation in value of a Phantom Stock Unit from its value on the date the
SAR was granted to its value on the date it is exercised based upon the
applicable valuation of the Company. From and after, but not prior to, the
occurrence of a Change in Control, the SARs or stock options granted to the
Participants will become exercisable by the Participants for a period of 10
years from the date on which the SARs or stock options are granted. As of
December 31, 1995 and 1996, there were 998,000 and 840,500 SARs outstanding,
respectively. The SARs granted during 1995 were granted at a fair value of
$1.40 per SAR. During 1996, 29,000 SARs were granted at a fair value of $9.22
per SAR. In addition, 185,500 SARs were forfeited in 1996. Subsequent to
December 31, 1996, the Company granted an additional 157,500 SARs at a fair
value of $8.50 per SAR and 4,500 SARs were forfeited. Assuming an initial
public offering of 2,852,191 shares by the Company at a price of $8.00 per
share, the SARs granted in 1995, 1996 and subsequent to December 31, 1996 will
be converted to stock options with exercise prices of approximately $2.23 per
share, $14.67 per share and $13.53 per share, respectively.
 
  Due to the terms and conditions of the SAR Plan, the SARs or stock options
outstanding thereunder will be accounted for by the Company as compensation
expense when it becomes probable that a Change in Control of DTM will occur.
The amount of compensation expense so recognized will be equal to the number
of SARs or stock options outstanding multiplied by the difference between the
exercise price of each SAR or stock option and the value of each SAR or stock
option at the date of the Change in Control. The exercise price and value at
the date of Change in Control of the SARs or stock options is determined by a
complex formula. However, upon the closing of an IPO, the Company will
recognize a non-cash charge (compensation) of approximately $2.9 million
(assuming an initial public offering price of $8.00 per share) to record the
appreciation in value of the SARs. The Company has reserved 800,000 shares of
Common Stock for future issuance under the SAR Plan.
 
  The Company has elected to follow APB Opinion No. 25, "Accounting for Stock
Issued to Employees" and related Interpretations in accounting for its
employee incentive plan. The required additional disclosures under the
alternative fair value accounting provided for under FASB Statement No. 123,
"Accounting for Stock-Based Compensation," are not provided as no compensation
expense would be recognized on a pro forma basis.
 
12. KEY EMPLOYEE STOCK OPTION PLAN
 
  In January 1996, the Company's Board of Directors approved a DTM Corporation
Stock Option Plan (the "Option Plan"). Under the Option Plan, the Company set
aside 357,755 shares which may be awarded to key employees, as selected by
management and approved by the Compensation Committee of the Board of
Directors (the "Committee") through stock options, stock appreciation rights,
limited stock appreciation rights, restricted stock, performance shares, or
other awards as determined by the Committee. In the case of stock option
awards, the option price per share may not be less than the fair market value
of a share on the date the option is granted. Options granted under the Option
Plan will vest in three separate installments with 35 percent of the options
granted becoming exercisable on the first anniversary date of the option
grant, 35 percent becoming exercisable on the next succeeding anniversary date
and 30 percent becoming exercisable on the next succeeding anniversary date.
Options will be exercisable for a period of no more than 10 years from the
date of grant. The term of the Option Plan is five years unless terminated
earlier by the Board of Directors. There have been no grants made under the
Option Plan.
 
13. MANAGEMENT INCENTIVE PLAN
 
  In January 1996, the Company's Board of Directors approved a DTM Corporation
Management Incentive Plan (the "MIP Plan"). The MIP Plan provides for the
grant of incentive compensation to key management employees who have the
potential to positively influence the performance of the Company as a reward
for levels of performance above the ordinary performance standards compensated
by base salary. Under the MIP Plan, each participant is assigned a "cash bonus
target" of 20 to 50 percent of base salary and the compensation committee
 
                                     F-14
<PAGE>
 
                                DTM CORPORATION
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                               DECEMBER 31, 1996
13. MANAGEMENT INCENTIVE PLAN (CONTINUED)
 
of the Board of Directors creates personal and corporate performance targets,
as well as minimum thresholds. If the minimum thresholds are met, the bonus
payable will be between 50 to 150 percent of the participant's cash bonus
target. No expense was recognized in connection with the MIP Plan in 1996.
 
14. GEOGRAPHIC AND CUSTOMER INFORMATION
 
  The Company and its subsidiary, located in Germany, operate in one industry
segment: the development, manufacturing and service of SLS systems and related
products. Operations outside of the United States consist principally of
sales, marketing and customer support. Transfers between geographic areas are
accounted for at amounts which are generally above cost and consistent with
the rules and regulations of governing tax authorities. Such transfers are
eliminated in the consolidated financial statements. Identifiable assets are
those assets that can be directly associated with a particular geographic
area. The following is a summary of operations within each geographic area (in
thousands):
 
<TABLE>
<CAPTION>
                         NET REVENUES  TRANSFERS
                             FROM       BETWEEN    TOTAL
                         UNAFFILIATED  GEOGRAPHIC   NET     LOSS FROM            IDENTIFIABLE
                          CUSTOMERS      AREAS    REVENUES  OPERATIONS NET LOSS     ASSETS
                         ------------  ---------- --------  ---------- --------  ------------
<S>                      <C>           <C>        <C>       <C>        <C>       <C>
1994:
United States...........   $ 6,689(a)   $ 1,449   $ 8,138    $(5,743)  $(4,096)    $ 7,974
Germany.................     2,550          --      2,550         12        12       1,656
Eliminations............       --        (1,449)   (1,449)       --        --       (1,070)
                           -------      -------   -------    -------   -------     -------
                           $ 9,239      $   --    $ 9,239    $(5,731)  $(4,084)    $ 8,560
                           =======      =======   =======    =======   =======     =======
1995:
United States...........   $12,056(a)   $ 2,102   $14,158    $(5,431)  $(3,822)    $10,446
Germany.................     2,155          --      2,155       (175)     (176)      2,386
Eliminations............       --        (2,102)   (2,102)       --        --       (2,193)
                           -------      -------   -------    -------   -------     -------
                           $14,211      $   --    $14,211    $(5,606)  $(3,998)    $10,639
                           =======      =======   =======    =======   =======     =======
1996:
United States...........   $18,731(a)   $ 4,184   $22,915    $(4,691)  $(4,767)    $16,906
Germany.................     5,648          --      5,648        353       278       3,103
Eliminations............       --        (4,184)   (4,184)       --        --       (2,112)
                           -------      -------   -------    -------   -------     -------
                           $24,379      $   --    $24,379    $(4,338)  $(4,489)    $17,897
                           =======      =======   =======    =======   =======     =======
</TABLE>
- --------
(a) The Company's United States net revenues from unaffiliated customers
    include export sales (principally to the Pacific Rim) of $666,000 in 1994,
    $2,611,000 in 1995 and $6,540,000 in 1996.
 
  The Company's revenues are derived from sales to a wide range of
international customers. During 1995, $2,111,000, approximately 15 percent of
total revenues, were from sales to one customer.
 
15. SUBSEQUENT EVENT
 
  On February 13, 1997, the Company's Board of Directors authorized management
of the Company to proceed with an IPO of the Company's common stock. Although
the success of such a proposed offering cannot be certain, management is
proceeding with activities relating to this process.
 
                                     F-15
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY IN-
FORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS
PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY, THE SELLING SHARE-
HOLDERS OR ANY OF THE UNDERWRITERS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OF-
FER TO SELL OR A SOLICITATION OF AN OFFER TO BUY THE SHARES BY ANYONE IN ANY
JURISDICTION IN WHICH SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED, OR IN
WHICH THE PERSON MAKING THE OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO,
OR TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION.
NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL CRE-
ATE ANY IMPLICATION THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY
TIME SUBSEQUENT TO ITS DATE.
 
                                ---------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                          PAGE
                                                                          ----
<S>                                                                       <C>
Prospectus Summary.......................................................   3
Risk Factors.............................................................   7
The Company..............................................................  12
Use of Proceeds..........................................................  12
Dividend Policy..........................................................  12
Capitalization...........................................................  13
Dilution.................................................................  14
Selected Consolidated Financial Data.....................................  15
Management's Discussion and Analysis of Financial Condition and Results
 of Operations...........................................................  16
Business.................................................................  24
Management...............................................................  37
Certain Transactions.....................................................  41
Principal and Selling Shareholders.......................................  45
Description of Capital Stock.............................................  46
Shares Eligible for Future Sale..........................................  47
Underwriting.............................................................  48
Legal Matters............................................................  50
Experts..................................................................  50
Additional Information...................................................  50
Index to Financial Statements............................................ F-1
</TABLE>
 
                                ---------------
 
  UNTIL MAY 27, 1997 (25 DAYS AFTER COMMENCEMENT OF THIS OFFERING), ALL DEAL-
ERS EFFECTING TRANSACTIONS IN THE COMMON STOCK, WHETHER OR NOT PARTICIPATING
IN THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS. THIS DELIVERY
REQUIREMENT IS IN ADDITION TO THE OBLIGATION OF DEALERS TO DELIVER A PROSPEC-
TUS WHEN ACTING AS UNDERWRITERS AND WITH RESPECT TO THEIR UNSOLD ALLOTMENTS OR
SUBSCRIPTIONS.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                               3,039,000 SHARES
 
 
                                 COMMON STOCK
 
                                ---------------
 
                                  PROSPECTUS
 
                                ---------------
 
                           A.G. EDWARDS & SONS, INC.
 
                         LADENBURG THALMANN & CO. INC.
 
                                  MAY 2, 1997
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------


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