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  1. #1
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    Default What are these bits?

    The ones with the four prongs appear to be for creating plugs, what are the ones with the rings, and how to use them?06A3D0CA-7B79-41F0-9AAF-312BBFFDF642.jpeg

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  3. #2
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    Aug 2008
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    Default

    I'm pretty sure they're all plug cutters, just 2 different styles

  4. #3
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    Default

    Agree with Elan. I find it far easier, and safer, to use them in a drill press.

  5. #4
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    Default

    Oh yeah, definitely in a drill press and on a fairly slow speed; they're only carbon steel so spinning too fast will burn up the cutting edge

  6. #5
    rrich Guest

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    Absolutely! Use in a drill press!

    These bits produce tapered plugs. Don't try to drill all the way through a piece of 19mm timber. Just drill 12mm or so deep. After drilling all the plugs plus 6 or 8 extra, take a blade screw driver and a slight twist between plug and wall of the hole will pop the plug loose.

    When you go to use the plugs, remember that the bottom of the plug is the widest part. Use glue sparingly to hold the plug in place. After the glue has cured, sand the plug flush. If you are using plugs made from the same timber as the project, try to align the grain as that will make the plug almost invisible.

    I always preferred to make plugs from a contrasting bit of timber. Ebony in particular makes a very attractive contrasting plug.

  7. #6
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    I think I put the plug in upside down. No wonder it needed a hammer and still left a gap:/

  8. #7
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    Ah damn. Didn’t notice plug cutters imperial, holes metric. Drilled out to next larger size to make plug fit: 13mm > 1/2”. Still doesn’t fit, and hole is bigger. Fill and refinish time. Sod it.

  9. #8
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    Default

    Looks like the second type can cut longer plugs
    Archer 8 Piece Plug cutter Set | Carbatec

  10. #9
    Join Date
    Jul 2005
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    Oberon, NSW
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    Default

    Quote Originally Posted by lyricnz View Post
    Looks like the second type can cut longer plugs
    Archer 8 Piece Plug cutter Set | Carbatec
    They can, although I've found they're slower to cut. (Unless you force 'em, in which case you're just as likely to end up with short plugs anyway.)

    The 4-prong type have a tendency to 'break off' plugs short as they're nearing their max depth, particularly if the cutter is a dirty inside or beginning to blunt. Charred tapers are a good sign it needs some attention.

    I always slip the 'wrong' end of the drill bit into the 4-prong type to double-check for size before moving on. It should be a snug fit long before it reaches bottom. If I want a plug that's 7-10mm tall (my usual size) then the drill bit only needs to go into the plug cutter by 4-5mm before stopping.
    I may be weird, but I'm saving up to become eccentric.

    - Andy Mc

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