It's easier to get tip straight and at the right angle without a lot of practice this way. I then grind the secondary clearance back of the cutting edge. This leaves a small flat at the cutting edge. Working in machine shops I found it easier and just as good to grind the cutting edge first, with a small amount of clearance, without rolling the drill. difficult at first but can be learned with practice. In school I was taught to roll the drill on the grinding wheel, grinding the cutting edge and relief in one pass. I have one like yours, only did twist drills do far and it works great. When you get the end mills down let me know. Will sharpen up to 2” and do end mills, came with an air bearing attachment to do the end mill flutes also. I spent a pile of $$$ and got a used Rush 250 off of Craig’s list. Edited by D6Joe 07:07īeen using a drill doctor for years. Posted 06:57 (#7098582 - in reply to #7098285) Subject: RE: sharpening drill bitsīeen using a drill doctor for years. Tidy little building outside, lots of machine stuff inside! Couple blocks east of Rt 50, S side of street. Then they coat the bit in plastic to prevent damage to the bit, or damage to your body while carrying them. They use a machine to sharpen also.not hand. I take my bits bigger than 5/8" to a machine shop for sharpening. Quicker and probably better than the machine.Įven sharpen without removing from a drill.Īlso I prefer the side of a chop saw blade vs a bench grinder. Really how a sharpened bit so it will cut vs a dull bit just ride around in circles.Īnd presto, I could now sharpen bits free hand. But the nice thing it taught me how to sharpen a bit. Could have been a Drill Doctor, more likely something else. Had heard about the devices or machines that sharpen bits. So for me sharpening drill bits meant buying new drill bits. Or that ‘Gauge’ you were supposed to make and use. Posted 23:51 (#7098417 - in reply to #7098285) Subject: RE: sharpening drill bitsĭuring school shop class, also Ag Engineering at Iowa State, I never could understand what they were talking about on drill bit sharpening. Also use the drill doctor to add the double back cut/split point. The drill doctor to reshape a broken bit and a bench grinder to just sharpen a dull one. Had a neighbor ex machinist show me how to do it. I can sharpen just as good and much faster on the bench grinder. Sharpen the old one to look like the new one. I always used an ordinary pedestal grinder but bought a belt sander a couple years ago and it is far easier to get a bit sharp with the proper clearance on the belt sander. There’s some videos on YouTube that might help High school machine shop teacher taught me back when schools taught skills. For my drill dr I feel the chuck adapter for bit over 1/2" was a waste of my money. After that I've been having better luck with clean safety glasses and getting my eyeballs close to the grinding wheel, being patient, and doing them by hand. I have good luck with my drill dr for about 3/8 and under. and my results of useing it are rather poor.Īny ideas or suggestions would be appreciated. How do you fellas sharpen your drill bits ? By hand or machine? If you use some kind of sharpener,what kind is it? Posted 22:04 (#7098285) Subject: sharpening drill bits
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