Drill bit doctor8/2/2023 ![]() ![]() We hold ourselves to within 3/1000 of an inch - that’s one half the width of a hair!” “We make a highly accurate drill point,” Hank explained.”The chisel point has to be right in the middle of the drill bit for both the cutting lips to work accurately. What about coated bits or a bit that has overheated and lost temper (usually turning blue or purple)? According to Hank, on coated bits you’re only sharpening the tip so the coating remains intact, and you can actually restore temper by sharpening down to good steel. The Drill Doctor uses a diamond-impregnated wheel, and since the wheel is made from a steel blank it never changes shape. Since it only takes a few turns, a minimum of material is removed and the number of times the bit can be re-sharpened is maximized. Only a subtle downward pressure is required (depending on the size of the bit) and, once the bit is sharpened, the grinding wheel doesn’t touch the tip anymore. How far the bit sticks out of the chuck determines how much material will be removed. A chuck holds the bit near the tip and by the flute, rather than holding onto the shank … this prevents any chatter while it’s grinding. As Hank described it, the Drill Doctor uses a camming system to create the same motion as the CMC sharpener that originally made the drill bit. It’s like a lightbulb comes on when they suddenly make the connection between all those old drill bits they’ve got laying around and the Drill Doctor.” But once they get the idea that it’s the tip, it makes sense. Re-sharpening seems beyond a lot of people because they think that the flutes do the cutting. “Most woodworkers know how to sharpen chisels and blades, but their drill bits have been collecting in a tin can or drawer. His company offers a line of drill bit sharpeners that easily and quickly restores a drill bit to its original sharpness. Hank wants to change the way people think about drill bits. A dull drill bit brings everything to a halt, and sends you off to buy a new one. Woodworkers, like most people, have only a certain amount of time they can devote to their projects. ![]() Sure, re-sharpening means you’re not spending more money on drill bits, but Hank feels that saving time is the big benefit with Drill Doctor. Third and most importantly, sharp drill bits save you time! Second, his company’s product, the Drill Doctor, makes it easy to sharpen them accurately. First off, drill bits were meant to be re-sharpened. Hank O’Dougherty, president of Drill Doctor, wants you to know three things.
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