Thread: Question about silicone and latex

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Can I use a silicone mold to make a latex mask? I was about to purchase some RD-407 but it keeps talking about a plaster mold to help remove water from the latex. I already have a silicone mold of what I want to do so that would be preferred. Thanks.

The answer is yes and no.

Latex really doesn't like to set up against silicone. It will, but you have to brush in dozens of thin coats and let each air dry, eventually building up your thickness.

A plaster molds work well because it's porous, so the latex's water and ammonia can absorb into it. You can fill a plaster mold with latex, let it sit for an hour and then pour the remainder back into the bucket. The latex will have formed a nice skin on the plaster surface.

So...yes and no.

-Chris