RP improvements suggested.

From: Tooling & Production | Date: June 1, 2000 | Copyright information

NASA's Jet Propulsion Laboratory, Pasadena, CA, reports that several improvements have been proposed in the area of rapid prototyping.

In rapid prototyping according to current practice, the polymeric material is one that has low molecular weight, little or no cross linking, and few (if any) active functional groups in its molecular structure. Such a material is used because (1) it lends itself readily to melting and solidification over a narrow temperature range and (2)...

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