An curved arrow ... tricks up its quickly melting sleeve. It melts in your hand, can be used to make a gag spoon, and can turn a typical soda can into mush. The aluminum on a can amalgamates ...

you’ll need a way to melt metal. [Jake]’s DIY foundry furnace gets hot enough to melt aluminium, and is built out a mix of scrap parts. The chamber of the furnace is built out of a water ...