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  1. 22nd August 2020, 01:17 PM #1
    Lappa
    Lappa is offline Woodworking mechanic
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    Default My Father’s drill bits

    For years and years, at the bottom of a drawer, has been and old felt? roll with my Dad’s drill bits.

    F8B845E1-F1D0-4A76-BE2A-A5D28D4E344A.jpeg

    I decided to pull them out and take a look. Even thought the roll is very oily, the bits where rusted, so after a clean in acetone to get rid of the oil, and a wire brush, they went into a vinegar bath.

    Pulled them out after an hour or so, wire brushed them then a go over with wet and dry and an oiling and they came up a treat.

    Heres a selection of the different types

    96A76F09-8E8B-4074-9B80-F8828F9C3E2A.jpg

    I’d like to sharpen them.
    I did a search re the three on the right of the photo above and all the links showed bits with a one or two spurs facing in the direction of the screw thread and the sharpening process concentrated on this types. One showed my spurless type but then only showed sharpening the spur type.
    Looking at the three on the right, only two of mine have a spur, all the others don’t, so I would like to know if my assumptions re sharpening the more common type are correct by consulting the more knowledgeable.

    On the example below, I believe these are the surfaces to file. Is that correct?

    4D099159-29B1-4682-85A5-7DFD4515D366.jpeg

    How do I correctly sharpen these other types?

    B65BC446-17D2-4248-947B-4753195A505F.jpgB6215EF9-E20D-4F7A-8058-315869E1373A.jpg79234AE8-78B0-4684-BDA3-6C5C3546DAD0.jpg

    Thanks
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  3. 22nd August 2020, 04:38 PM #2
    Mountain Ash
    Mountain Ash is offline GOLD MEMBER
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    Default

    Hi Lappa. If you chase up "Wood by Wright" on YouTube he has a good video on sharpening them.
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  4. 22nd August 2020, 08:57 PM #3
    Lappa
    Lappa is offline Woodworking mechanic
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    Default

    Thanks. Thats one of the sites I have looked at but he shows sharpening bits that have downward facing spurs or nickers.

    As I said in my post, the majority if mine don’t have downward facing spurs.
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  5. 22nd August 2020, 09:37 PM #4
    Cgcc
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    Default

    If it doesn't face "downward" it's not a spur. You have lost any spurs on the ones in close-up.

    There are videos on sharpening the "snails" which usually involve putting an abrasive material in a small hole and running in and out.
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  6. 22nd August 2020, 10:48 PM #5
    Lappa
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    Default

    I know what a spur is (some of mine have then) and the ones I'm asking about do not have them and never did so no, they haven't been lost.
    The cutting areas on the spur ones I have are totally different to the one I posted the close up of.

    Anyways I found an old wood worker in the UK that knows this type and has informed me that they are normal and have what be calls a reverse spur. He could see it in the same picture I posted here. He is emailing me some details on sharpening them and the other types I posted photos of. He suggested my father may have brought them over with him when he immigrated from the UK in the 1920's.

    Thanks for the replies.
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  7. 23rd August 2020, 11:34 AM #6
    Mountain Ash
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    Hi Lappa. When the info comes through I would love to know how to sharpen spurless augers too. I have a few also
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  8. 23rd August 2020, 12:15 PM #7
    Lappa
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    As I mentioned in a previous post, they have spurs, sort of, but they face upwards hence “reverse spurs”. They are called Scotch pattern augers apparently.

    He linked me to this site.

    Augers

    Nothing fancy about sharpening them apparently. As with all augers, don’t sharpen on the outside edges.

    I’ve ordered a proper auger sharpening file so I’m looking forward to having a go.
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  9. 23rd August 2020, 09:11 PM #8
    Mountain Ash
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    Thanks for the link Lappa. Where are you ordering the file from? I assume it's the "safe" type
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  10. 24th August 2020, 07:57 AM #9
    Lappa
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    Lie-Nielsen toolworks in Melbourne.
    Yes, it’s the file with the safe surfaces especially made for sharpening augers
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  11. 24th August 2020, 08:15 AM #10
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    Tccp123
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    Ahhh... fathers and tools and the sharpening thereof. I remember my father giving me his plane blade (postwar Stanley No.4 with the bakelite blade adjuster) to sharpen on the back step. Needless to say he didn't produce a lot of fine joinery
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