- Joined
- Apr 30, 2015
- Messages
- 11,295
My shop teacher could do a fair job of drill hand-sharpening but I never had much luck doing it.
Recently, I needed to make a drill extension so I wanted to use a "junk" drill; I needed to put a new edge on it.
I found a tutorial on YouTube by a guy named Tom, he uses a two-step method first grinding the edge angle and then doing the relief afterwards, all freehand, but using a protractor to measure the angle.
I watched carefully and tried it- success! Tested the drilled hole and it was only .001" over the shank diameter. And I just eyeballed the angle and relief- pretty good for a first try.
Mark S.
Recently, I needed to make a drill extension so I wanted to use a "junk" drill; I needed to put a new edge on it.
I found a tutorial on YouTube by a guy named Tom, he uses a two-step method first grinding the edge angle and then doing the relief afterwards, all freehand, but using a protractor to measure the angle.
I watched carefully and tried it- success! Tested the drilled hole and it was only .001" over the shank diameter. And I just eyeballed the angle and relief- pretty good for a first try.
Mark S.