RE: Multiple Material RP Systems

From: Monica & Glenn Whiteside (
Date: Thu Jul 23 1998 - 04:12:03 EEST

[ From: Al Hastbacka * EMC.Ver #2.5.3 ] --

In looking at some segments of the RP market, it looks as if a multiple
material RP system would be very useful. For example, RP systems that could
produce models/patterns containing both a polymer and a metal, or a ceramic
and a metal.

How useful do you think this type of capability would be to your

Al Hastbacka


There's several ways to look at multiple material RP processes. One way is
where you mix them together into a sort of alloy-like combination. Another
way is to use the multiple materials separately such as using metal for a
certain portion of the part/pattern and a polymer for a different section.
Or you could use a combination of the above two methods.

As long as the accuracy and large model capability was there, I think this
would be a useful capability, especially to make models or patterns more
durable and/or for specific surface characteristics such as a teflon-like
surface for better part or tool release while using a metal matrix for
rigidity and durability. Perhaps a strong, rigid metal base could be made
as part of the process with a polymer material used for the mold cavity
(replaceable insert) that would nest into the metal base with easily
removable supports.


Glenn Whiteside
Cessna Aircraft Company

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