Solid Concepts Purchases DTM Sinterstation(R) System; Cites Ability to Quickly Produce Strong, Functional Plastic Prototypes As Reason for Purchase DTM LOGO DTM logo. (PR NewsFoto)[AS] AUSTIN, TX USA 08/05/1998

25 May 2000
    AUSTIN, Texas, May 25 DTM Corporation
announced today that Solid Concepts, a service bureau in Valencia, California,
USA, has purchased a DTM Sinterstation 2500plus system.  Having in-house
access to a system that provides the selective laser sintering (SLS(R))
process will allow Solid Concepts to offer customers testable, functional
prototypes with mechanical properties similar to the final product.  In
addition, owning a Sinterstation will allow Solid Concepts to offer their
customers more material choices, along with the ability to test prototypes
that can withstand high temperatures and harsh chemicals that are similar to
actual conditions.  Solid Concepts' customers include aerospace and consumer
electronic OEMs, as well as medical device suppliers.
    "We are very impressed with the accuracy improvements found in the
Sinterstation 2500plus over earlier models.  Solid Concepts typically uses the
polyamide material to prototype injection molded parts.  The level of accuracy
is far better than we had expected.  The polyamide also has better material
properties such as higher strength and heat deflection temperature than other
RP systems in its class.  We believe this combination of benefits will
dramatically expand the marketplace for SLS parts.  We are also using the
CastForm material and have received very promising feedback from our foundry
customers.  We expect this to satisfy many of our customer's needs for short
run production castings," notes Joe Allison, President of Solid Concepts.
    "We are seeing a trend with companies that have relied exclusively on
other rapid prototyping processes.  They are taking note of the advances DTM
has made with materials and the Sinterstation 2500plus system.  Integral to
this success are two of DTM's more popular materials, which include DuraForm
Polyamide and DuraForm GF (Glass Filled).  Additionally, the new software
features including drag and drop placement of parts allows users to easily
nest and stack parts in a build," notes Kevin McAlea, DTM's Vice President of
Marketing and Business Development.

    About DTM Corporation
    DTM develops, manufactures, and markets advanced rapid prototyping and
manufacturing systems, including the Sinterstation(R) 2500plus.  All
Sinterstation systems utilize a process called SLS(R) selective laser
sintering and any of several plastic or metal SLS materials to create 3-D
objects from Computer Aided Design (CAD) data.
    Unlike competing technologies and systems that are used primarily to
create visualization models, DTM's systems address industry's growing need for
rapidly produced, durable, testable prototypes and end-use parts.

    About Solid Concepts
    Solid Concepts Inc. is one of the most advanced providers of rapid
prototyping and manufacturing services in the world.  Founded in 1991, the
Company has enjoyed tremendous growth, fueled by a commitment to service and
constant technical innovation.  Solid Concepts Inc. is a privately held
corporation headquartered in Valencia, California.

    Forward Looking Statement and Safe Harbor Disclaimer
    This release contains forward-looking statements that involve risks and
uncertainties, which may cause our actual results to differ materially and
adversely.  Many of such factors are detailed in our filings with the
Securities and Exchange Commission.  Sinterstation(R), and SLS(R) are
registered trademarks and DuraForm(TM) is a trademark of DTM Corporation.

                        For more information, contact:
                               DTM Corporation
            1611 Headway Circle, Building 2, Austin, TX, USA 78754
                  Phone +1.512.339.2922; Fax +1.512.832.6753
                           http://www.dtm-corp.com
                            marketing@dtm-corp.com

                                Solid Concepts
                              Valencia, CA, USA
                            Phone +1.888.765.4388
                         http://www.solidconcepts.com