First thing you need is a furnace to melt aluminum in... This diy example is really simple and cheap.. Where i've used ceramic fiber blanket in the base, sodium silicate and perlite can be used.... The top of the furnace is a stainless steel bowel lined with ceramic fiber blanket, then rigidized with silicon dioxide, a colloidal silicate.... I had an old photo copy stand that i use to lower & raise... It also swings to the side and locks in place for access to the crucible... Old disposable propane cylinders hold about 5# of aluminum, and are good for 4-6 melts... Now for a few pics of said oven..