
Pottery Plaster Vs Plaster of Paris
Once it has become partially dehydrated it is called calcium sulfate 'hemihydrate'. ... When gypsum is heated in a nonpressurized environment, it produces 'beta gypsum'. ... You can use Plaster of Paris for molds if you buy it from a specialist plaster supplier. As stated above, some suppliers that specialize in Plaster of Paris use a ...