FAQ & Problem Solving

Why Won’t My LiquaCast® Mold Harden?

FAQ & Problem Solving Why Won’t My LiquaCast® Mold Harden? Castaldo LiquaCast RTV jewelry molding rubber WILL CURE if the proportions have been mixed properly and cure temperatures are correct. Unlike traditional silicone rubber molding materials which allow wide latitude in mixing proportions, the proportions of LiquaCast Part A & Part B must be MEASURED PRECISELY. Proportions cannot …

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How To Test Your Vulcanizer

FAQ & Problem Solving How to Test Your Vulcanizer Most of the problems that jewelry mold makers experience with vulcanizing natural and silicone rubbers are the result of faulty or improperly set vulcanizing presses. If the temperature is too low the mold will not cure properly and will remain soft, gummy and easily deformed. If …

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