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How To Keep Drill Bits From Slipping In Drill Chuck
A. David Karge, Tallmadge, Ohio: "Many drill bits bigger than 1/2-in. dia. have a tendency to slip in the drill chuck. If you grind three flat sides onto the shank, you can solve the problem. You can space these equidistant around the shank by wrapping electrical tape around the bit, leaving the shank exposed, and snug
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How To Keep Drill Bits From Slipping In Drill Chuck FARM SHOP Handy Hints 22-5-38 A. David Karge, Tallmadge, Ohio: "Many drill bits bigger than 1/2-in. dia. have a tendency to slip in the drill chuck. If you grind three flat sides onto the shank, you can solve the problem. You can space these equidistant around the shank by wrapping electrical tape around the bit, leaving the shank exposed, and snugly screwing a close fitting hex nut onto the taped end. By resting every other flat side of the nut on the tool rest of the bench grinder, you can easily grind three equally spaced, 1/16-in. deep flats on the shank. Simply remove the hex nut and tape and you're ready to use the drill without having the drill bit slip."
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