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Recc wanted for a drill bit sharpner

Posted by spriddler <iframe src='https://members5.boardhost.com/classicbikemart/info/user=spriddler' width='330' height='300' border=0 style='border:none;'> on April 1, 2022, 2:19 pm

I have maybe 100 drill bits of assorted sizes in various boxes but in spite of trying each of them I never seem to be able to find a sharp one so I nip out and buy a new one.
I do wonder why I keep the blunt ones (as I do for some klepto reason with duff sparkling plugs). How many blunt drills of the same size does a chap need for goodness sake?
I did buy a drill bit sharpener some years ago but since I doubted that re-sharpening drill bits at home was feasible I bought a cheap one. Like all cheap stuff it wasn't any good.
I've been trying to drill 4mm holes in angle iron this morning and all I've managed to do is work-harden the previously blunted tips of 7 different bits. Yes I do use oil and the appropriate drill speed. Having just paid £18 for three 'quality' bits I've decided to spend a day sharpening my existing ones but only if there's a good sharpener available.
I'll wager that I'm not alone in having boxes of blunt drill bits and duff sparkling plugs.

Re: Recc wanted for a drill bit sharpner

Posted by Sparrow <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Sparrow' width='330' height='300' border=0 style='border:none;'> on April 1, 2022, 2:47 pm, in reply to "Recc wanted for a drill bit sharpner"

There is a skin on rolled a/iron. Try firm pressure and stop/start the drill to keep the speed down to just tuning till you break the into the softer stuff inside.
I tried a machine but it was rubbish the stones were too coarse. Best of luck.
On the the other hand one of the shopping channels occasionally has sets of drills that go through Breeze block, glass, brick iron and steel sandwiches like butter. Must get some.

Re: Recc wanted for a drill bit sharpner

Posted by Lannis <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Lannis' width='330' height='300' border=0 style='border:none;'> on April 1, 2022, 2:50 pm, in reply to "Recc wanted for a drill bit sharpner"

I'd love to know the answer myself, both for drill bits and for spark plugs. Got 5 gallon buckets of each, seems such a waste that they can't even be sharpened or cleaned up.

Lannis

At no time in history have the people forcing other people into compliance been the good guys.

Re: Recc wanted for a drill bit sharpner

Posted by Hants Ian <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Hants+Ian' width='330' height='300' border=0 style='border:none;'> on April 1, 2022, 3:08 pm, in reply to "Re: Recc wanted for a drill bit sharpner"

I have always done my drill bits by hand, I had to do that when I was an Auto-setter.

The light at the end of the tunnel maybe an oncoming train

Re: Recc wanted for a drill bit sharpner

Posted by divie <iframe src='https://members5.boardhost.com/classicbikemart/info/user=divie' width='330' height='300' border=0 style='border:none;'> on April 1, 2022, 4:10 pm, in reply to "Re: Recc wanted for a drill bit sharpner"

As a time served apprentice toolmaker we had to do our own drill grinding. I still grind my own drills but anything under 2.5 mm is replaced due to dodgy eyesight and the hand tremors from the Parkinsons.
I have never seen a drill grinding machine that has impressed me but there must be one available.

Sloper runs again.

Re: Recc wanted for a drill bit sharpner

Posted by Tonupdave <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Tonupdave' width='330' height='300' border=0 style='border:none;'> on April 1, 2022, 4:24 pm, in reply to "Re: Recc wanted for a drill bit sharpner"

Yes do mine by hand the big stuff In the lathe at slow reverse and hand holding a stone ..but like most have boxes of them

Tonupdave..T.U.D.

Re: Recc wanted for a drill bit sharpner

Posted by geoff the bonnie <iframe src='https://members5.boardhost.com/classicbikemart/info/user=geoff+the+bonnie' width='330' height='300' border=0 style='border:none;'> on April 1, 2022, 10:35 pm, in reply to "Re: Recc wanted for a drill bit sharpner"

I have always used the grinder for drills but now, i often buy ex-military Dormer drills. The sets in LIDL are fairly good for hobbying.

Re: Recc wanted for a drill bit sharpner

Posted by Andy C <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Andy+C' width='330' height='300' border=0 style='border:none;'> on April 2, 2022, 8:09 am, in reply to "Recc wanted for a drill bit sharpner"

I bought one of these a few years ago:

https://www.machinemart.co.uk/p/sealey-bench-mounting-drill-bit-sharpener-80w/

Seems to work pretty well, I have sharpened quite a few drills with it.

Who needs a signature anyway......

Re: Recc wanted for a drill bit sharpner

Posted by spriddler <iframe src='https://members5.boardhost.com/classicbikemart/info/user=spriddler' width='330' height='300' border=0 style='border:none;'> on April 2, 2022, 10:48 am, in reply to "Re: Recc wanted for a drill bit sharpner"

Sparrow - yep I noticed that once I'd got through the hard skin it bit in and cut cleanly and with satisfying spirally swarf.

Thanks all.
I'll give it a go first by making a drill sharpening rest for my bench grinder - I've nothing to lose as I can't make them any more unusable.
In truth, now that I've finished my immediate drilling needs I probably won't do anything to the duff bits until I need to drill some more holes and then I'll go through the same old process of grumbling, faffing and searching through for a sharp drill all over again. Sigh.
('Twas ever thus).

Re: Recc wanted for a drill bit sharpner

Posted by Andy C <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Andy+C' width='330' height='300' border=0 style='border:none;'> on April 2, 2022, 6:51 pm, in reply to "Re: Recc wanted for a drill bit sharpner"

Spriddler - I used to have a drill sharpening attachment for my bench grinder, when you got the hang of it, it used to work pretty well.

The little one from machine mart seems to work fine as long as you dont hurry it, take it slow and steady and it works fine.

Who needs a signature anyway......

Re: Recc wanted for a drill bit sharpner

Posted by spriddler <iframe src='https://members5.boardhost.com/classicbikemart/info/user=spriddler' width='330' height='300' border=0 style='border:none;'> on April 2, 2022, 9:04 pm, in reply to "Re: Recc wanted for a drill bit sharpner"

Thanks Andy.

....don't hurry it, take it slow and steady and it works fine.

At my age I've no option.

Re: Recc wanted for a drill bit sharpner

Posted by SteveB <iframe src='https://members5.boardhost.com/classicbikemart/info/user=SteveB' width='330' height='300' border=0 style='border:none;'> on April 4, 2022, 7:32 am, in reply to "Re: Recc wanted for a drill bit sharpner"

Far better to sharpen them by hand on a bench grinder

Just take your time and get your angles right, very light pressure on a fine grindstone wheel.

Plenty of vids on youtube, including using two nuts to give you a near enough angle to copy.
You need 118 degree,
Two hex nuts together give 120! That’s near enough for me.

Re: Recc wanted for a drill bit sharpner

Posted by spriddler <iframe src='https://members5.boardhost.com/classicbikemart/info/user=spriddler' width='330' height='300' border=0 style='border:none;'> on April 5, 2022, 9:31 pm, in reply to "Re: Recc wanted for a drill bit sharpner"

Thanks Steve.

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