ComposiMold-Firm is a firm mold making material that is 100% reusable. More cost-effective than two part silicone mold material. It works by melting and pouring. ComposiMold-Firm is a flexible, rubbery, thermoplastic that is great for mold parts that require a stiffer mold making material. It is compatible with many different casting materials including clays, plaster, cement, epoxy, polyurethane, and many others. You can use ComposiMold-Firm for polymer clay push molds and is great for metal clay molds.
ComposiMold Firm is great for larger molds which require detail. ComposiMold Flex is better used for very small or fine molds.
Use with Liberation Spray and Bubble Buster for best results.