be careful while you do this! Pressing down on the dirt to make it nice and compact to prepare it for contact with the molten copper. *Melting copper.* Pour in the molten copper. *Water sizzling on hot copper.* *Removes copper knuckles and sand out of wooden box.* The copper has solidified but still requires a bit of tinkering before it is ready. The water is to cool down the piece of copper. Be careful, cooling it for too long will make it fragile. *Angle grinder* And THAT is how you can make your very own home made brass knuckles out of copper.