Irving,been watching youtube vids on melting and casting Ally,very instuctional.

The best homemade foundry or melting pot is the Propane bottles,take the tap off and cut the lid off,line it with fire cement,dig a hole in the side for an air to propane torch and the melting is in no time..

Gotta find a round steel or cast iron tube for the crucible though.

Put "casting aluminium in sand" without the quotes in google and the youtube will come up.