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  1. #1
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    Default Sharpening tiny drills

    Ever wondered how to consistently and accurately sharpen tiny drills? Here's the answer:

    True Point, by the Up-To-Date Tool Co, Worcaster, Mass. USA, with sleeves for Nos. 41-60 (2.438 - 1.016 mm). I have also seen an expired ebay listing for one with sleeves for 61-80

    IMAG2895.jpgIMAG2898.jpgIMAG2896.jpgIMAG2897.jpgIMAG2900.jpg

    Load the appropriate sleeve

    IMAG2901.jpg

    Secure the bit in the pin vise

    IMAG2902.jpg

    Line the edge up with the attached guide. According to the Patent documentation there was a magnifying attachment, possibly as an optional extra, but I don't have it

    IMAG2903.jpg

    Set the projection with the knob on the bottom and lock with the nut at the base of the pin vice

    IMAG2904.jpg

    A few strokes with the provided stone

    IMAG2905.jpg

    Index and repeat

    IMAG2906.jpg

    They even include a small rod to push the bit back out

    IMAG2907.jpg


    Patent here: https://patents.google.com/patent/US2736147

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  3. #2
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    South Australia
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    Default

    That would be a very handy gadget, I think I will be looking out for one, I have lots of small drills to sharpen

  4. #3
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    Default

    I used to work with a toolmaker who sharpened number drills on a grinder using a jewellers loupe.
    CHRIS

  5. #4
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    Default

    That is interesting I must say I have never really tried, I buy them in packs of 10 and just throw the blunt one in the round to it box

  6. #5
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    Default

    That's a cool little tool. Can't imagine anyone taking the time to use one nowadays in this throw away society, but would have been very handy back in the days of when it was invented.
    Dallas

  7. #6
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    Default

    The smallest I've tried sharpening on a grinder is 2mm. Worked alright, but bits are so cheap that it's hardly worth the effort. I did do a 2.5mm brad point once, that was fun

  8. #7
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    Default

    Interesting gadget. So do you actually have it or just the pics?

  9. #8
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    Default

    I have it

  10. #9
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    Default

    Nice one. Was that a local find? and what angle does it set the tip?
    I have the Tormek drill sharpener which does a quite a nice job but only goes down to 3mm.

  11. #10
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    It was an ebay find a few years ago out of the US.

    I'm not sure the exact angle, but it looks like 118 degrees. I'll try to get a protractor on it to confirm

  12. #11
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    Default

    Yep, it's 118 degrees

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