<P> Plaster mold casting is a metalworking casting process similar to sand casting except the molding material is plaster of Paris instead of sand . Like sand casting, plaster mold casting is an expendable mold process, however it can only be used with non-ferrous materials . It is used for castings as small as 30 g (1 oz) to as large as 45 kg (99 lb). Generally, the form takes less than a week to prepare . Production rates of 1--10 units / hr can be achieved with plaster molds . </P> <P> Parts that are typically made by plaster casting are lock components, gears, valves, fittings, tooling, and ornaments . </P>

What can you cast in a plaster mold