View Full Version : what to use as a mold for silicone

10-14-2010, 09:29 PM
I am wondering what to use as a mold for silicone masks/ prosthetics?

Allen H
10-14-2010, 10:35 PM

10-18-2010, 02:47 PM
Fiberglass for large projects such as masks and you can use hydocal, ultracal 30 and rigid urethanes for smaller pieces such as appliances/prosthetics.

10-27-2010, 09:39 AM
The recommendation I've gotten - even from full-time moldmakers - is to contact smooth-on and/or polytek (or one of their dealers), ready with details of your project. They know their products best. Fiberglass is a good suggestion, but there are other resins that might work just as well w/o fiberglass and would be much less hassle, and there's a reasonable chance that silicone isn't even the ideal casting material for your task! It's worth looking into.

smooth-on homepage (http://www.smooth-on.com/)
polytek homepage (http://www.polytek.com/cart/index.php)

Best of luck.