New Material From DTM

From: Terry Wohlers (Wohlers Associates)
To: RP-ML
Date: Monday, December 11, 1995
Subject: New Material From DTM
     I was informed today that DTM has announced a new family of materials for their Sinterstation 2000 RP machine.  The first product in the family is called TrueForm PM (for Pattern Material) designed for investment casting and soft tooling (e.g., silicon rubber tooling) applications.  Parts produced from the material have sharp edges, fine features, and a smooth surface finish.  I saw a sample of it a few weeks ago and it looked quite good, although they wouldn't say much about it then.  
     DTM is using small (30 micron), spherical particles -- versus large, irregularly shaped ones -- which is why they are seeing improved feature definition and surface finish.  They discovered this when developing the RapidSteel material for their RapidTool metal sintering process.  The small, round particles also help to improve dimensional accuracy, according to DTM.
     Detailed information on the TrueForm PM material will be available tomorrow (Tuesday) on their web page:  http://www.dtm-corp.com/home.html
     Hope this new information is of interest to everyone.