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.

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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.