Video: Every wrench sitting in a toolbox wants to grow up to become a tomahawk. That’s because the locked jaw of a wrench actually makes for a pretty perfect axehead after it gets heated and treated and, well, hammered into shape.
The key is to flatten out the U-shape of the wrench into a straight line by repeatedly bludgeoning it on the corner edge of a table. Miller Knives shows that everything after that is beautiful blacksmith work: Sanding, shaving and sharpening.