- This topic has 6 replies, 5 voices, and was last updated 10 years, 4 months ago by
.
- Topic
- Replies
Thanks for the review, I am now motivated to purchase one of those and tackle the drawer full of dull bits I have collected over the last 10 years and could not bring myself to toss. I used to bring them to my dad who was a retired aircraft engineer, he could just fix them using a grinder and his hands, even well into his 80’s he could edge a bit that would cut like crazy. He aimed for 137 degrees and would split them, he said that if a bit walked on an aluminum panel of a plane the whole panel had to be scrapped.
I have owned the drill doctor for about 10+ years and it does work.
I don’t have any adjustment on mine but it does what I need it to and
thats sharpen dull bits time and time again. If I could count all the
dull bits I have thrown out or put in a drawer and rebought I would be
a millionaire. 🙂 Thumbs up.Does the Drill Dr. do left hand drill bits? Don’t use them often, but when I do I’m already having an interesting day.
Long ago my older son was trying to mount a tool box on the tongue of a trailer. He had grabbed a L.H. drill bit from my bench without knowing it. Being a good Dad I didn’t let him struggle too long before passing on some tribal wisdom.
I never got the feel for hand held dressing of twist bits. I know what I’m supposed to do in theory, but I can’t execute well. And my grinding wheel faces are not the best either. So this tool interested me.
But cut rate is secondary in importance to my machining operations where I want a reasonably precise hole diameter. A poorly sharpened twist bit will drill an oversize hole. I would have been interested to measure the hole’s diameters. Or at least insert the bit’s shank to check its play or wobble in the hole.
[quote=”Rereonehundred” post=115594]I never got the feel for hand held dressing of twist bits. I know what I’m supposed to do in theory, but I can’t execute well. And my grinding wheel faces are not the best either. So this tool interested me.
But cut rate is secondary in importance to my machining operations where I want a reasonably precise hole diameter. A poorly sharpened twist bit will drill an oversize hole. It would have been interested to measure the hole’s diameters. Or at least insert the bit’s shank to check it play or wobble in the hole.[/quote]
Great point, I think for 99 percent of drilling a sharpened drill will do just fine. I have had only a few situations when fabricating parts where things had to be very precise and those go to the drill press or get done on the lathe with my “do not touch under penalty of death” set of bits.
- You must be logged in to reply to this topic.