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Thread: Best drill bit for end grain boring?

  1. #1
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    Best drill bit for end grain boring?

    Not really a "woodworking" question of the usual variety:

    I had two pine trees removed at the beginning of the summer. I want to drill some holes into the stumps & add some sodium metabisulfite to help break things down.

    The woodworking portion of this question is what kind of drill bit is best for drilling into end grain wood? I figure my paddle style bit isn't going to be the best option, but I'm not sure what style bit I should try.

    Anyone have some experience to share?

  2. #2
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    Any twist bit or auger should do fine. Depends on how large you want to drill the holes. Twist are fine up to a half inch then you may want to go with an auger bit.

  3. #3
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    Antique shops are your friend.
    Find a brace and look for an auger bit about 3/4" or larger.
    I have several with a couple that have extended length.
    I almost sold all my Neander stuff but find I'm still reaching for this stuff about once or twice a year.
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  4. #4
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    Quote Originally Posted by Matt Ducar View Post
    I want to drill some holes into the stumps & add some sodium metabisulfite to help break things down.
    Wouldn't C3N3H5O9 be faster?
    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  5. #5
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    Thanks for the tip on using the auger bit rather than a twist bit -- wasn't sure which would be better. Swung by the new HF store and got a 3 piece auger bit set that has a 1" bit for under $20.

  6. #6
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    Quote Originally Posted by Brent Dowell View Post
    Wouldn't C3N3H5O9 be faster?
    I thought about using C6H2(NO2)3CH3 but then decided it wouldn't be faster.

    I figured it would take about an hour to place the charge and remove the stump.

    Then there would be the getting arrested, court hearings, lawyer fees, & otherwise dealing with the aftermath.

    The stump would probably have rotted away on its own before I got done with the mess created

  7. #7
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    Quote Originally Posted by Brent Dowell View Post
    Wouldn't C3N3H5O9 be faster?
    yeah if the intent is to remove the stump and put in a built in pool

  8. #8
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    Quote Originally Posted by Brent Dowell View Post
    Wouldn't C3N3H5O9 be faster?
    Wasn't he R2D2's partner's 2nd cousin on his mother's side???
    Last edited by Dan Mooney; 09-04-2011 at 10:24 PM.
    Jesus was a Woodworker

  9. #9
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    Quote Originally Posted by Dan Mooney View Post
    Wasn't he R2D2's partner's 2nd cousin on his mother's side???
    Sorry Dan, some of us are also geeks.

    C3N3H5O9 = Nitroglycerin
    C6H2(NO2)3CH3 = TNT = Trinitrotoluene = Dynamite

  10. #10
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    http://www.wikco.com/stump.html One of these would be about 1/4 the cost of Brent's method.
    It could be worse You could be on fire.
    Stupid hurts.

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