Drill sharpener

miller1098

miller1098

Zorg Guru (V)
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British Zeds
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Mar 1, 2013
Points
196
Location
Carno,Welsh Wales
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M
Doing a job last week drilling some clamp holes in the tractor wheels to atach another pair made me realise how blunt my very large selection of drill bits are and how useless I am at sharpening. So i dug into a cupboard and dusted off this thing I'm not even sure it's complete but it's doing a better job than me .What do you use?
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It's all about two angles Hugh. The cutting angle and the clearance angle. I sharpen drills by eye and have done for a long time. That looks as though it's complete, and, as long as the side face of the grinding wheel is flat and hasn't had tyre fitters "gouging lumps of angle iron to make bead breakers", it will do the job.

Tony.
 
t-tony said:
It's all about two angles Hugh. The cutting angle and the clearance angle. I sharpen drills by eye and have done for a long time. That looks as though it's complete, and, as long as the side face of the grinding wheel is flat and hasn't had tyre fitters "gouging lumps of angle iron to make bead breakers", it will do the job.

Tony.
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I’ve done it by eye and I need glasses
 
I used to, then I got my eyes "lazered" and now I just need reading glasses for close up work. Still beats looking for goggles.=))

Tony.
 
By the way when I was an apprentice engineer in the Agricultural world we used to weld 3 "cleats" onto the steel wheels for Cage wheels to attach to. However the fitters never wanted to deflate the tyre and knock the bead off the rim so they would weld 1/2" then the lad would cool it with a watering can. You can imagined how many "tickles" you got Arc welding in a pool of water!

Tony.
 
t-tony said:
By the way when I was an apprentice engineer in the Agricultural world we used to weld 3 "cleats" onto the steel wheels for Cage wheels to attach to. However the fitters never wanted to deflate the tyre and knock the bead off the rim so they would weld 1/2" then the lad would cool it with a watering can. You can imagined how many "tickles" you got Arc welding in a pool of water!

Tony.
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Yep been there lol .these are a different fitting as they have a tensioner like the chain ones for heavy loads on trucks.
 
Just noticed how worn my hand looks in the picture so I thought I'd take a picture. Be interesting to see your hands .my left usually gets the roughest time as my right is usually holding the hammer;)
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Drill sharpening is a dying art, nowadays they just throw them away.
 
mwpe said:
Drill sharpening is a dying art, nowadays they just throw them away.
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I never throw them away until they’re broke but I seem to buy a lot of new ones cos I’m crap at sharpening.i seem to go through a lot of the pop rivet sizes or pilot holes for tec screws
 
You can buy multiple packs of 3mm/1/8" bits for pennies these days.

Tony.
 
miller1098 said:
Just noticed how worn my hand looks in the picture so I thought I'd take a picture. Be interesting to see your hands .my left usually gets the roughest time as my right is usually holding the hammer;)View attachment 140969 View attachment 140971 View attachment 140973
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To be honest Hugh my hands are pretty much damage free these days mate since I packed work in.
I always used to find you would go a long time without hurting yourself, but then, like a bus they would all come together.

Tony.

ps. I don't miss that to be fair.;)
 
 
It does seem the smaller sizes are now so cheap ,not worth shardening.
The exeception being good quality masonary drill bits. Years ago before giving up work we would use a lot of 18mm , 25mm and 32mm long masonary bits for drilling through 4 courses of engineering bricks, and these got sent back to Hilti or another who I can recall to be redone at a fraction of cost of buying new. We would get 20/30 done at a time.
 
t-tony said:
Bryan, @Eddie Zedder why you disagree please?:)

Tony.
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t-tony said:
Bryan, @Eddie Zedder why you disagree please?:)

Tony.
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Sorry Tony, in the middle of replying last night but lost wifi. I disagreed on the grounds of health and safety.

Back in my fitting days I was trained in mounting and looking after all our workshop grinders, which I was responsible for checking every morning. Bench grinder wheels should only be used on the front face, they aren't designed to take side loading and can explode spectacularly if subjected to side pressure, especially wheels that haven't been looked after.

As a first aider I have had to deal with the after effects of an exploded wheel and believe me it's not pleasant. 50% of abrasive wheel accidents are down to operator error, a large proportion are exploding wheels due to side grinding.

This is from the HSE document covering abrasive wheels -

Side grinding
135. Grinding on the side of a straight-sided wheel used for off-hand grinding is dangerous, particularly when it is appreciably worn or when sudden pressure is applied.

Just want to make sure everybody stays safe :thumbsup:. I won't go into the importance of guarding. :)
 
I am aware of that mate that's why I mentioned the idiots who did use the side of the wheel. Light dressing of a small drill bit doesn't worry me all the same.

Tony.
 
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