Metal casting! Molten aluminum poured into a sand mold, very fun,safe and SO easy! You are only limited by your imagination...
Backyard Metal Casting
Learn To Do Aluminum Sand Casting
How to make a simple backyard foundry for less than $20, for melting pop cans, and casting aluminum.:
How to make casting nuggets a out of soda cans. Survival black smithing 101
Home Foundry for metal casting
Lost Foam Metal Casting Tutorial excellent info!
Molten aluminium is poured over the wood, filling the leftover spaces in the mould and completing the piece. The heat of the metal burns the edges of the wood and creates a line of charcoal between the two materials.
See how to make custom rings and metal parts: Casting Rings - From Startup to Finish
Metal casting furnace