How To Make a Karambit Knife Out of a Lawnmower Blade

Thanks for all of the requests for this build! Today we”re making a karambit out of an old lawnmower blade. The blade I”m using is sometimes called a universal blade because it has a 1 inch center hole with different sized bushings to fit various lawnmowers. Most of the tools I used including the torch, anvil, hammer, clamps, and angle grinder were found at Harbor Freight Tools. Flattening can be done using almost any hammer or striking tool and a hard, flat surface. I used a 1/8″ cobalt bit for drilling the holes. They are very tough bits and work much better for cutting in steel than high speed steel or nitride-coated bits. This one bit drilled about 100 holes in spring steel before becoming dull.

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