![]() When satisfied with the point on the first side, turn the drill bit 180 degrees and use the same grind-and-cool process for the opposite side of the tip. Once the bit is cool to the touch, inspect it to see if it’s honed to a good point on the side you just worked. Failure to do so will cause the drill bit will become too hot to hold and even wear down the metal faster, shortening the effective life of the bit. ![]() Pause after four to five seconds of grinding and dip the drill bit into the ice water to cool the metal. ![]() If the angle isn’t steep enough, the drill bit won’t bore smoothly. Focus on grinding the heel of the bit, where the tip meets the twisted shaft-not the edge-to achieve the ideal angle. Remember: Your objective is to simply grind the dull surface away, not wear down the bit. Hold the bit at this angle against the wheel for no more than four to five seconds. Do not turn or rotate it simply keep it straight and held at the original factory angle of 60 degrees. Slowly, carefully, move the bit until it contacts the wheel. Get a firm grip on your drill bit and hold the cutting edge precisely parallel to the front of the grinding wheel. STEP 2ĭon your goggles and turn on the bench grinder. If the bits are really ravaged, start with the coarse wheel, and switch to the finer one later in the process if your bits don’t look too bad, begin with the finer grinding wheel. Many bench grinders have two grinding wheels, one coarse one and one fine. Your goal is to remove only enough metal to get a sharpened edge. How to Sharpen Drill BitsĮxamine your dull bits. Because it’s crucial to have a firm hold on the bit while grinding, gloves are listed as optional. Note: Some find that wearing work gloves impairs the ability to get a safe grip on a drill bit.
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