Sharpening drill bits by hand - Page 22


View Poll Results: Do you sharpen drill bits by hand on a bench or pedistal grinder?

Voters
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  • Yes I do it all the time!

    584 70.70%
  • No, they never cut right!

    45 5.45%
  • Sorry, I don't know how to do that!

    63 7.63%
  • Its better to throw them away!

    29 3.51%
  • No, we have a drill sharpening machine!

    91 11.02%
  • What's a drill bit?

    14 1.69%
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Thread: Sharpening drill bits by hand

  1. #253
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    Default Re: Sharpening drill bits by hand

    I just do it by hand now but where i worked in Germany we had a jig that mounted on a bench grinder and worked perfectly.



  2. #254
    Gold Member handlewanker's Avatar
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    Default Re: Sharpening drill bits by hand

    Quote Originally Posted by RCaffin View Post
    CBN cup wheels 125 mm dia - quite a few on eBay at $40 or less.
    You just have to tune your search a bit.

    The >$100 ones are 200 mm diameter and larger.

    Cheers
    Roger
    Hi Rog.....I saw those, but they have a title of CBN diamond.....I didn't know they cam in a mix of CBN and diamond.....enlightenment please.

    Based on the fact that most sellers on EBAY are just outlets for the main line and so don't even know what they are selling........any inquiries high light this.

    My previous grinding life was mostly with Aluminium oxide stones, of which I have a ton, but the CBN wheels are better as you don't have grit from the need for constant dressing going all over the place.
    Ian.



  3. #255
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    Default Re: Sharpening drill bits by hand

    Hi Ian

    Advertising 'CBN Diamond' may mean they are stocking both, or it may mean they don't have a clue. I would avoid them I think. Mind you, buonshopping is not all that bad - I have bought from him before.
    A Ukranian vendor ua-lend seems to be selling new condition old stock 'CBN (BORAZON)' wheels. I have never bought anything from him, but they should be OK.
    There are various other wheels under 'people also viewed' looking similar. If it is labeled 'CBN (BORAZON)' it should be just that.

    I use diamond for carbide but switch to CBN for all the HSS. Works well.

    Cheers
    Roger



  4. #256
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    Default Re: Sharpening drill bits by hand

    Hi, I doubt they actually stock both as the listing only prices one at a low price and inquiries only get a vague answer.....gonna make some inquiries.
    Ian.



  5. #257
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    Default Re: Sharpening drill bits by hand

    Hi Rog.....saw the Borazon listing from Ukrain seller UA-lend.........bought two 125mm diam wheels......$30 to $40 each.........that is magnificent.....made my day....thanks a lot......the Cuttermaster will be happy.
    Ian.



  6. #258
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    Default Re: Sharpening drill bits by hand

    Hi Ian

    Teaching a grandmother to suck eggs ...
    Run them gently, don't gouge resin out of the face. But a very different world from AlOx.

    Cheers
    Roger



  7. #259
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    Default Re: Sharpening drill bits by hand

    Hi Rog, hardly an egg sucking grandmother situation as I ground cutters on and off over the years but not with a continuous time line and only as the need arose.

    You wouldn't want to grind cutters as an occupation as it'll drive you to drink from pure repetitive boredom.

    I collected a box load of ali oxide wheels from my last employ when they down sized the tool room and now have the time to use them.....being able to play with the machine is a lot different to doing an 8 hour shift day after day, on the same old same old etc.

    I'll take your word of warning seriously as the CBN type are new to me.
    Ian.



  8. #260
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    Default Re: Sharpening drill bits by hand

    A small price to pay for a new skill.



  9. #261
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    Default Re: Sharpening drill bits by hand

    Yeah, very time consuming too........it's like learning watch repairing when all you want to do is change the battery every 2 years or so.
    Ian.



  10. #262
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    Default Re: Sharpening drill bits by hand

    A steady hand and lots of practice to be consistent. Buy a cheap drill sharpener.....it will set your angle and lip length correctly.



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