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  1. #1
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    Which clay for making a silicone mold

    I have several wood-resin composite molds. I would like to have these same molds in flexible silicone. I'm thinking the way to do this is to create an object from the wood-resin mold out of clay, then use a liquid silicone to make the mold out of that image. (These are small, cookie-sized molds.)

    However, I can't figure out which kind of clay to use. The wood-resin composite molds cannot be heated! It seems like an air-dry clay wouldn't be waterproof enough, even if sealed, to withstand a liquid silicone. Or would it?

    Can anyone offer my advice here?

    TIA!


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  3. #2
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    You can heat up some monster clay, pour it into the molds, and pop out a monster clay duplicate.. then use what ever silicon molding material on top of that.
    My commentary is a gift to you.

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  5. #3
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    Modi -THANK YOU! I'd thought that would be a good idea, but wondered if monster clay could be used in a non-flexible mold. Would it need a release agent, do you know?

  6. #4
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    Not 100% sure, but certainly would help. Even embedding a ring or some handle in the exposed end to help pull it out.. definitely you can chill the monster clay to a pretty darn hard solid and help with demolding.
    My commentary is a gift to you.

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