QuickSil is a revolutionary new 0% shrinkage jewelry molding rubber material that makes tough, long lasting production molds with a high shine finish almost instantly. QuickSil molds are not weak, delicate prototype molds that can be used only once or twice. They will last for thousands of uses and dozens of years. QuickSil can be used for lost wax casting and can also be used for direct casting of low temperature metals such as pewter, tin etc. 2 pound kit.