Interesting! Thanks . . but could small castings be done in a elec. kiln
that has a top temp of 2300 +,_??
At 09:23 PM 10/10/96 -0500, you wrote:
Jim Chambers wrote:
Questions I(we) have experience I don't! This week-end I went to a local
art show and discussed modeling and making molds with a 'Master Mold
maker"(Now people . . . that's what he said) an my guess is he was.
was confused a little on the details of the overall process(which we would
like to hear your version of) but the detail. For example,
He use rubber(latex??) molds, fill them with wax(what kind
and were do you get it?), removed the rubber mold,
the wax with ???????), then melted the wax out, many coats
can this be done in a normal jewelers kiln?? temps????
How's that for a start..... certainly curious?
At 04:03 PM 10/9/96 -0800, you wrote:
I think you are going to have to cleean that question up a bit, I'm not
quite sure what you are asking me. M.G.
The man is talking about mass production mnfg. #1-we melt pure rubber
reduce problems from oxidation in the vulcanizer ( the machine that melts
the rubber) the model is carefully cut out of the rubber and wax (injection
wax) is injected into the cavity where your master model was cut out.The wax
is placed on a spru base,the spru base is placed at the bottom of a flask
and a plaster like wet mixture called investment is poured around the wax ,
it is covered up by at least one half inch (I say one half inch because I
use a machine that My uncle and I developed, patented last year; this is a
vacumn-assisted centrifical caster)this is left to harden for 50 minutes or
so, placed in the burnout oven to eliminate the aformentioned wax. the
burnout should take at least 6-8 hours. The tube-like flask is placed in the
arm of the centrifuge(or vacume chamber if you use a vacume caster) your
desired metal is melted a!
nd the arm of the centrifuge is released and voalla, you now have a metal
couold get. your friend ,Mike Gilger