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To release silicone rubber from silicone rubber, use a release agent that does not contain a significant amount of silicone oil. Inno silicone provide especially for releasing
silicone rubber from silicone rubber and other surfaces. It goes on as a light mist coating and will not interfere with surface detail.
Option: you can also use petroleum jelly thinned with a solvent such as mineral spirits. Make sure you don’t leave brush strokes on the cured rubber’s surface as they will
be reflected in the mold
