Wheelium Ingots

A broken aluminium wheel is a castable, machinable alloy, chop it, melt it, and pour some ingots.

It's an easy pour, so you get to make sure all the tools and set-up works, and ingots are easier to handle later when you are casting something more interesting.

Cook the mould over the furnace to make sure there is no water in it,  unless you think this is fun !