RTV molds and vacuum

I bought a two part (green and white) RTV molding compound. I press
it really, really hard into my wax master and I’m not really happy
with the detail it’s picking (read not picking) up. It does not
conform perfectly in all places.

Will this stuff work better under vacuum? How would that work ?

I saw the presses that go in forms but I can’t do that set up. I’ll
explain if necessary.

Thanks for any advice to get better results.


I really think that you should be using a pour type RTV if you are
trying to make molds off of wax masters. No heat, no presses, vacuum
would be best but not essential, could use a pressure pot in place
of vacuum, if neither is available, can get by with careful mixing.

John Dach