Re: casting wax

From: Glyn Churchman (
Date: Fri Jun 11 1999 - 21:44:57 EEST

T clarify, I was speaking of the question Rafael Santillan asked and was referring to the
problem with using his silicone mold he had made from a wax pattern. I was not referring
to Bruce's process or parts.


Glyn Churchman wrote:

> To add to Bruce's previous posting:
> As noted, the process works fine but your problem will be that the parts you cast in
> this silicone mold
> will be too small unless tolerances don't matter. Wax shrinks quite a bit.
> Many waxes will work but to get consistent dimensional results you must have good
> repeatability
> of the injecting pressure, temperature of the wax and temperature of the mold-- just as
> in
> injection molding of plastics. Depending on your part configuration some waxes may be
> too
> brittle or too soft.
> Glyn@Prototech, Inc.

For more information about the rp-ml, see

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