Watch molten aluminum transform into stunning custom shapes with this complete DIY casting tutorial. From melting scrap metal ...

You can melt down almost any kind of aluminum—cans, even—but a piece that has already been cast (such as a water pump, wheel, or intake manifold) will have an alloy that's better suited for casting.

For some mobile projects like small carts or rolling cabinets, your standard casters from Harbor Freight will do just fine. But some projects need big, beefy wheels, and these custom cast aluminum ...