Heterogeneous Models

From: Gill Barequet (Tel Aviv University)
Date: Monday, July 25, 1994

From: Gill Barequet (Tel Aviv  University)
To: RP-ML
Date: Monday, July 25, 1994
Subject: Heterogeneous Models
On 7/24/94 Wolfgang Schloegl writes:
> > This captures if the process can control the microstructure of the shape
> > being formed.  (e.g., can we control grain size in metals, can we control 
> > where we place two different materials inside a single shape, etc.)
>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Could anyone tell which RP technologies in the future will be able to
> use different materials to build one part.
On 7/24/94 Chuck Kirschman writes:
> ... Cubital is kind of hybrid, in that they already
> build with 2 materials.  They could be adapted for more, as long as the
> base material is photopolymer and all subsequent materials are thermo-
> cycling or hardenable.  Epoxies might be a neat application here.
Two remarks:
     1. On March/30-April/1/1993 Cubital Ltd. organized an open workshop on Heterogeneous Models. I 
believe that everyone who is interested can get a copy of the proceedings (~50 pages) from them.
     2. True, Cubital's process involves two materials, but traditionally one of them (the "plastic") was used for the models, and the other (wax) was for supporting only, replacing the need for support structures as in SLA-type processes. You may image the use of wax-made models, but (to the best of my knowledge), since that was not the primary purpose of the wax, it was not designed to have mechanical properties etc. as needed by models.
Gill.


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