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Castaldo Super High Strength™ Molding Rubber

A superior quality medium hardness jewelry molding rubber with extreme tear and tensile strength for every application including spirals, cores, cut-outs & plugs as well as for general purpose use. Can be used with Econosil® on the outside for additional stiffness or on the inside for additional dimension stability.

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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Golden River™ Injection Wax Additive

Golden River wax additive makes jewelry injection waxes flow like water. With Golden River wax additive, there is no need to change waxes or clean out your wax pot with all the work, mess and delay that it causes.

Plast-O-Wax® Injection Wax

Castaldo Plast-O-Wax jewelry injection wax produces patterns that are very flexible, resilient and durable with great memory.
Patterns will not break despite rough handling which means fewer broken patterns and greater productivity.