Make your own flexible rubber molds for casting resin, jewelry, polymer clay, beads, chocolate, sugar, cake decorating, plaster, candle wax, ice, ultra thick embossing powder, texture pads and more. This easy-to-use kit uses two-part silicone and mold-making rubber. The kit contains enough putty to make many molds, depending on the size of the original. Details: 2/3 lb.Complies with FDA standards for food contactWork time is 2 to 3 minutesCures to a flexible rubber mold within 20 minutes