Q&A for How to Make a Silicone Mold

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  • Question
    Can the silicone-and-cornstarch mold withstand hot temperatures, such as liquid wax?
    T. Chinsen
    Top Answerer
    Hot wax melts at 37° C (99° F). Silicon can withstand temperatures up to 260° C (500° F), There is enough temperature range for melted wax to be put in a silicon mold without damaging the mold.
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    Not Helpful 16 Helpful 68
  • Question
    Can I use plaster of Paris in a mould?
    Cafra
    Community Answer
    Yes, you can use almost any "plaster" in the mold as long as the substance or putty is long and wide enough for your needs.
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    Not Helpful 11 Helpful 21
  • Question
    Can I bake liquid poly clay in a homemade silicone mold?
    Alcyone Rainbow
    Community Answer
    Yes. Polymer clay and liquid clay are baked at around 265 degrees Fahrenheit, which does not damage silicone.
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    Not Helpful 8 Helpful 21
  • Question
    Can you use silicone in the mold after you make it?
    kait
    Community Answer
    Yes. Once a silicone mold is fully cured, it will accept any material in the casting process.
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    Not Helpful 0 Helpful 3
  • Question
    Can the last method be used to make molds for 3D items? I know I would need to "cut" the mold into two parts for 3D items. What is the best way to do that?
    Alex Lukacsffi
    Community Answer
    The last method can be used for 3D items. Silicone is best cut through with precision using a craft knife, although any knife would work.
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    Not Helpful 1 Helpful 2
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