Category Archives: Mold Making Rubbers

There are two types of silicone rubber: Tin (condensation) cured¬†and Platinum ( addition) cured silicone rubber. Both types has advantages and disadvantages and neither are compatible with one another. Silicone rubber is an excellent choice for making molds, they offer excellent strength, flexibility, and are self releasing. The only thing RTV silicone will stick to […]

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Dimethyl fluid additive:¬†Thins silicone Cast-a-Mold silicone thinner is a dimethyl fluid with a viscosity of 50 cps. This thinner will be compatible with any of our silicone rubbers. Lowering the viscosity of a mold making rubber will allow the silicone to flow more easily into smaller detailed areas. We recommend only adding 3% to 5%. […]

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