Preview: Harry Bryan – Sharpening Drill Bits
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December 4, 2019
Email this Video to a FriendBeware if a teenager asks to borrow your car and then you find them sharpening drill bits.
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14 Responses So Far to “Harry Bryan – Sharpening Drill Bits”
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Donald Fraser says:
Always a learning experience when I find one of Harry’s videos.
Neil Henderson says:
Thanks Harry – I haven’t tried this yet but I’m recovering from Covid now so have some time to meander in the garage on my own.
Regards Neil Henderson
John Traina says:
The ideal angle of the cutting edges of a high speed steel twist drill bit that is going to be used to drill mild steel is 118 deg in relation to each other . If you hold two hex nuts together flat to flat between say your thumb and index finger , the angle that the two nuts create above and below the two contacting flats ,is 120 deg. That’s pretty darn close to 118 deg. A little machine shop trivia
peter strietmann says:
The marker works beautifully! Thank you…
Greg Stamatelakys says:
Seems as electric grinders rotate the wheel too fast and the metal overheats. Can you make any comment regarding that issue?
Thanks!
David Hubbard says:
Great! I’ll stop buying new drills! BTW, the link to Harry’s website has a small issue. 401 error. Just FYI.
Chris Noto says:
Nice! You don’t see much information about sharpening anything beyond knives, chisels, shovels, and mower blades any more. Back in the 70s, my brother and I built a couple of 30′ x 100′ greenhouses, bending hoops of galvanized steel fence post material, and then, after mounting the hoops upright, adding stringers. Drilling all those holes for 1/4″ carriage bolts wore down half a dozen drill bits every day. Each night I’d sharpen them up, using a medium oilstone, stationary on my kitchen table, with a rolling/tilting motion a lot like Harry’s as he addressed his spinning wheel. It worked just fine, added a real sense of satisfaction to the job, and developed a skill that has come in handy many times since then.
scott hitt says:
Awesome sauce!!! Never a dull moment around there! Ha
Tony Hoff says:
Thanks Harry. Liked the black marker tip.
Fritz Richardson says:
Yes, that was a good one!
Eric Winter says:
“About 45 degrees to these two parallel cutting edges,” at about 2:50 on the tape.
I think I understand, but not if the cutting edges are actually parallel.
David Dickson says:
Very well explained and demonstrated Harry, thanks. I love your grinder setup!😍
I have to sharpen bits as small as 005, which can be hit or miss at times, but if they aren’t cutting, I just touch with my seperating disc on the flex shaft until they do.
I’ll use your marking pen tip for the larger bits from now on. 50 years and never thought of that, thanks.
Peter MacLearn says:
Great tips…pun intended…thanks Harry.
Dan Crete says:
Awesome!
: )