What can you cast in a plaster mold?
The major disadvantage of the process is that it can only be used with lower melting temperature non-ferrous materials, such as aluminium, magnesium, and zinc and sometimes copper alloys. The most commonly used materials is aluminium. The maximum working temperature of plaster is , so higher melting temperature materials would melt the plaster mold. Also, the sulfur in the gypsum reacts with iron, making it unsuitable for casting ferrous materials.
What type of materials can you cast in a plaster mold?
non-ferrous materials
Plaster mold casting
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What size castings can you cast in a plaster mold?
30g - 45 kg
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What objects can you cast in a plaster mold?
components, gears, valves, fittings, tooling, and ornaments
Plaster mold casting
https://en.wikipedia.org/wiki/Plaster%20mold%20casting
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 7–10 kg (15–22 lb). Generally, the form takes less than a week to prepare.
Plaster mold casting
Plaster mold casting is a metalworking casting process similar to sand casting except the molding material is plaster of Paris and not sand. 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 30g - 45 kg. Components, gears, valves, fittings, tooling, and ornaments are all objects you can cast in a plaster mold.