I\'m wondering if there is a resin/molding material that can withstand the heat of melted aluminum for casting parts. I know that sand casting is the \'norm\' but is there anything else? I\'d rather not have to pack sand every time I want to cast a part.Thanks!One common mold material for metal casting is plaster mixed with silica sand to give it more strength. It needs to be completely (like heated) dry before you use it, but it is actually more work than sand casting but it gives a better finish. There are some rubber materials which can withstand the heat of casting pewter, but the melting point of pewter is so much lower than aluminum that I am sure those won\'t work for aluminum. I think you are pretty much stuck with sand for the easiest method.Other related question