DIY POURABLE SILICONE for mold making. Thin silicone w/Naphtha, fast cure w/cornstarch.

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Silicone Mold Making Kit - 1 Gallon Liquid Silicone Rubber 15A with Adjustable Mold Housing - Fast Cured Easy 1:1 Mixing Ratio Silicone Casting for Making DIY Silicone Resin Molds - with Instructions

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