im melting aluminum and what should i use for metal. cans will just oxygenize( i forget the word for it sorry)
aluminum, in general, will just oxidize if heated in air. it is not just cans that behave that way when they (alcan, alcoa) smelt aluminum industrially they keep it in a reducing environment and do not allow molten aluminum to contact air. so use any aluminum you like but prevent it from contacting air.
