Category Archives: Mold Making Rubbers

 HOW MUCH MATERIAL SHOULD I MIX?   To estimate the total number of pounds of the material to mix for a given project, first measure the pattern to determine the volume to be cast in terms of cubic inches.   2. Choose a material suitable for your application and find how many cubic inches are […]

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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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