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I really enjoyed your instructable. Interestingly my son saw one somewhere and told his mom it looked like something he would really like. Little did he know I had already decided I was going to make this one. It's a merciless copy. Didn't have the time to get creative, and you had already done such a great job!Mine came out just a little bit smaller (28mm). I used a board from an old pallet so I had a fair amount of time machining the wood, but the build itself went quickly.
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Absolutely incredible, and beautiful! I'll be looking for an instructable on your jig. Can't wait to do it myself!For longer round spirals have you ever considered/tried using a support wheel in the center like I've seen in lathe applications?
First, great instructable!I've had a Drill Dr for many years and like it very much. It allows you to choose from a couple grind angles and it puts the relief on the back of the cutting edge as pointed out by jgaudreault. I've gotten very consistently good results. Occasionally I've struggled with small bits (less than 3/32). Sometimes I don't get the small bit in quite right and have to regrind it to center the point, but it's still very fast. Mine stays on the bench all the time. It's so quick I don't hesitate to touch up a bit if I have any concern about its sharpness.Drill on!
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