Jeweler's Mold Rubber & Mold Cutting

Injecting Castaldo LiquaGlass molds is easy because you can SEE the wax as it is injected!

• 0% Shrinkage RTV.
• Not an expensive hard-to-mix silicone rubber!
• Not an amateur “bake in the oven” material!
• Makes strong, flexible, easy to cut molds.
• Inexpensive and easy to use 1:1 mix ratio.
• Clear as Glass.
• Thin, easy to pour and mix, Castaldo® LiquaGlass® molds are easy to make because you can SEE what you are cutting!


LiquaGlass 0% shrinkage CLEAR liquid RTV jewelrymolding rubber makes strong, tough, flexible production molds at only a fraction of the price of clear silicone rubbers.  LiquaGlass is easy to measure, de-bubble.  LiquaGlass cures at room temperature in 24 hours with 0% shrinkage.  LiquaGlass is packaged in a 1 kg. / 2.2 lb. kit containing equal parts A & B. in an attractive consumer-oriented carton that is easy to handle and easy to ship. 

Provided in an attractive consumer-oriented box that is easy to handle, easy to sell, easy to ship and keeps the rubber neat, clean and fresh. Available in White Label® (regular/firm), Gold Label® (premium/soft), Titanium Label® (extra firm) and No Shrink Pink®.

Lined with white cloth (White Label and No Shrink Pink) or golden colored cloth Gold Label) on one side and blue plastic on the other side.

Castaldo® Ready Cut™ Jewelry Molding Rubber offers the ultimate in mold-making convenience.

Made to fit most popular-sized mold frames without cutting, measuring or trimming. Each piece 1 7/8th" x 2 7/8th" x approximately 1/8th" / 4.76 cm x 7.3 cm x approximately 3 mm.

Available in White Label® (regular/firm), Gold Label® (premium/soft), Titanium Label® (extra firm) and No Shrink Pink®.

Lined with white cloth (White Label and No Shrink Pink) or golden colored cloth (Gold Label) on one side and blue plastic on the other side.

Packaged in an attractive consumer-oriented box that is easy to handle, easy to sell, easy to ship and keeps the rubber neat, clean and fresh.