Use a Belt Sander to...

摘要

Belt sanders may smooth floors and strip paint, but YouTube user wyldediver demonstrates how they can also breathe new life into dull blades. To sharpen yours, start with a 150-grit belt. Slowly run one side of the blade across the belt a few times using light pressure (the sharp edge should point down at an acute angle to the belt). Next, sand the other side. Turn off the sander, swap in a 240-grit belt, and sharpen again. Repeat the cycle for 400-grit, 20-micron, and finally 9-micron belts. Buff away any flecks with a leather sanding belt treated with polishing compound.