3D Systems Files Counterclaim Against Vantico.

Business Editors

VALENCIA, Calif.--(BUSINESS WIRE)--Sept. 10, 2001

3D Systems Corp. (Nasdaq:TDSC) today announced that it filed a counterclaim on Sept. 4 against Vantico International SA and its subsidiary, Vantico Inc., in the previously announced arbitration initiated by Vantico.

In the counterclaim, 3D Systems asserts that as a result of the Aug. 19, 2001 termination of the 1990 Research and Development Agreement with Ciba-Geigy Ltd., after Feb. 18, 2002, Vantico will not be allowed to sell, directly or indirectly, certain stereolithography (SL) resins for three years.

Specifically, 3D Systems is asking the International Chamber of Commerce to enjoin any sales by Vantico, before Feb. 19, 2005, of the following: hybrid SL resins, including the entire family of Cibatool SL 5170 resins (SL 5170, SL 5180, SL 5190 and SL 5195); any SL resin that uses the additive BDMA; any filled resin; and any other SL resins that have been developed using confidential or trade-secret information from 3D Systems.

3D Systems believes that these represent the majority of resins developed and enhanced by 3D Systems for its SLA(R) product line and that its proprietary information is pervasive in a substantial portion of Vantico's products currently being manufactured, as well as those under development. As a result, 3D Systems believes that Vantico would be prevented under the terms of the Research and Development Agreement from separately marketing those products, unless the companies reach a subsequent agreement.

A separate agreement between 3D Systems and Vantico covers the distribution of resins in the Japanese market, and this will remain in effect until November 2002.

About 3D Systems

Founded in 1986, 3D Systems provides solid imaging products and solutions that help reduce the time and cost of designing products and facilitate direct and indirect manufacturing. Its systems utilize patented technologies that create physical objects from digital input.

3D Systems currently offers the ThermoJet(R) solid object printer, SLA(R) systems (stereolithography) and SLS(R) systems (selective laser sintering), as well as related software and materials. Product pricing in the U.S. ranges from $49,995, for the ThermoJet printer, to $799,000 for the high-end SLA 7000 system. The company licenses the complementary 3D Keltool(R) process, a method for producing steel mold inserts, and currently is developing systems that use composite paste materials for direct manufacturing. In August, 3D Systems merged with DTM Corp. and announced its intent to acquire Rapid Prototyping Chemicals (RPC) Ltd. of Marly, Switzerland.

More information on the company is available at www.3dsystems.com, or by phoning 888/337-9786, extension 789, or 661/295-5600 internationally. An investor packet can be obtained by calling 800/757-1799.

Certain statements in this news release may include forward-looking statements that express the expectation, prediction, belief or projection of 3D Systems. These statements involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance and achievement of 3D Systems to be materially and adversely 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 the company's prospects in general include, but are not limited to: the favorable resolution of the arbitration between the company and Vantico; the funding of amounts of capital adequate to provide for the working capital needs of the company; actions of competitors and customers; reliance on single or limited suppliers, the ability to timely and cost-effectively identify and obtain or independently develop resins adequate for use with 3D Systems' products, the negotiation and execution of definitive documents to acquire RPC, the efficient integration of DTM into the business of 3D Systems, and such other factors as are described in the company's filings with the Securities and Exchange Commission, including annual reports on Form 10-K for the year ended Dec. 31, 2000, quarterly reports on Form 10-Q for the quarters ended March 31 and June 30, 2001, and 3D Systems' current reports on Form 8-K filed on April 6, April 10 and Sept. 4, 2001.

Note to editors: ThermoJet, SLA, SLS, Keltool and the 3D logo are registered trademarks of 3D Systems.