3D Systems and DTM Extend Tender Offer in Response to Department of Justice Filing

3D Systems Corp. and DTM Corporation today announced that they have agreed to extend the expiration date of the tender offer for all the outstanding shares of common stock of DTM until midnight Eastern time on Monday, June 18, 2001. The tender offer had been scheduled to expire at midnight Eastern time, on Thursday, June 7, 2001.

3D Systems and DTM agreed to extend the offer in order to provide additional time to consider alternatives and to prepare for defense of the civil action filed today by the Antitrust Division of the U.S. Department of Justice to permanently enjoin the acquisition by 3D Systems of DTM.

"We believe the government's case is without merit, and we intend to vigorously defend the legality of the transaction," said Brian K. Service, 3D Systems' president and chief executive officer.

John S. Murchison, III, DTM's president and chief executive officer, stated, "DTM likewise believes that the government's case is without merit, and we remain committed to the transaction, which we continue to believe adds value for our shareholders as well as our customers."

About 3D Systems

3D Systems provides solid imaging products and services that substantially reduce the time and cost required to design, test and manufacture products. The company's systems utilize patented technologies that create physical objects from digital input.

About DTM Corporation

DTM develops, manufactures and markets advanced rapid prototyping and manufacturing systems, including the Sinterstation 2500plus. A growing number of manufacturers and service bureaus worldwide use these systems to rapidly create three-dimensional prototypes, parts, molds, tooling and casting patterns.

All Sinterstation systems utilize a process called selective laser sintering (SLS) to create 3-D objects from computer-aided design (CAD) data. The Sinterstation creates the part in a matter of hours using a CO2 laser to fuse together layers of powdered plastic, metal or ceramic powders. The results are durable 3-D parts produced in a fraction of the time it would typically take using other traditional methods.

Among the companies currently using Sinterstations are manufacturers such as BMW, Boeing, Pitney Bowes, Rockwell International, Volvo Penta and others. In addition, numerous service bureaus throughout the world include Sinterstation systems in their offerings to companies with only an occasional need for rapidly produced functional prototypes and parts. Parts and prototypes made on Sinterstation systems also are used in non-industrial settings, such as science and medicine.

Note to editors: ThermoJet, SLA, Keltool and the 3D logo are registered trademarks of 3D Systems. Sinterstation and SLS are registered trademarks, and DuraForm is a trademark, of DTM Corporation.

Certain statements in this news release may include forward-looking statements which express the expectation, prediction, belief or projection of 3D Systems or DTM. These statements involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance and achievement of 3D Systems or DTM to be materially different from any future results, performance or achievement expressed or implied by these forward-looking statements. Factors that may cause actual results to differ from the forward-looking statements contained in this release and that may affect each company's prospects in general include, but are not limited to: changes in general and industry-wide economic and business conditions; the availability of capital to 3D Systems on acceptable terms; the funding of amounts adequate to allow 3D Systems to acquire DTM and provide for the working capital needs of 3D Systems under the definitive loan document; actions of competitors and customers; the uncertain outcome of litigation, in which the parties are or may become involved, including the ongoing litigation between DTM and EOS GmbH, the action filed by the Department of Justice to enjoin the transaction and the class action lawsuit filed in connection with 3D Systems' acquisition of DTM; the impact of competitive products and pricing; the availability and acceptance of products generally; the extent to which the companies are able to develop new products and markets for their products; and such other factors as are described in the companies' filings with the Securities and Exchange Commission, including annual reports on Form 10-K for the year ended December 31, 2000, quarterly reports on Form 10-Q for the quarter ended March 31, 2001, and 3D Systems' current reports on Form 8-K filed on April 6, 2001 and April 10, 2001.

3D Systems, Inc., 26081 Avenue Hall, Valencia, CA 91355. Tel: 661-295-5600; Fax: 661-294-8406.