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Thread: drill bits

  1. 23rd January 2007, 06:28 PM #1
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    Default drill bits

    I mainly use brad point type drill bits for drilling pen blanks.But I do not have one for the Sierra pen kit,and I am using 27/64 Sutton bit(which they claim,has a special point to stop wandering).
    Before I go to the expense of purchasing a 11 MM brad point drill do you people think that it will be suitable or would the hole be to large.
    My calculation makes the 11 MM just .284 mm larger than the 27/64.Would epoxy take up that much slack.
    What type of drills do other pen makers use ?

    Regards Terry
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  3. 23rd January 2007, 06:41 PM #2
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    G'day Terry

    I just use a normal drill bit at that size(27/64) and haven't had any probs with it wandering. Can't imagine a bit that size wandering to have to replace it with a 11mm brad bit.
    Cheers

    DJ

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  4. 23rd January 2007, 08:07 PM #3
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    I to just use a Suttons viper bit 27/64 I have made heaps of Sierras and never had a problem however i do make my blanks 21mm just to give a little protection from major blowout, fortunately with them being a single tube a little wander has never bothered any of mine as long as you mill your ends dead square to the tube.
    and I always use epoxy anyway.

    Froggie
    www.addictivepenkits.com.au

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  5. 23rd January 2007, 09:34 PM #4
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  6. 24th January 2007, 08:47 AM #5
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    Default Sierra Pens

    Wandering around Arizona Silhouette sit the other day,found their instructions to make Sierras www.arizonasilhouette.com/sierrapen.pdf
    they give the drill size and full instructions.
    They sell Norseman Drills and DeWalt Pilot Point and give engineering specs for them.
    Also on their site they exclude some drills and do not stock them any more one is the brad point drill.
    My info is this firm is multi million in pens per year however everyone has their own theory with regards to brands shapes and sizes,this info is given to assist you in your choices,they confirm the drill sizes given in answer to your query.Hope this helps you. Peter
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  7. 24th January 2007, 12:07 PM #6
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    I've sort of gone off brad points. they only seeem to have advantages in softer timbers.
    In the real hard stuff and the plastics I don't think the go so well.

    A full set of metric, imperial and wire guage drills is a real assett and not too expensive.

    cheers
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  8. 25th January 2007, 11:13 AM #7
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    Quote Originally Posted by Froggie40 View Post
    I to just use a Suttons viper bit 27/64 I have made heaps of Sierras and never had a problem however i do make my blanks 21mm just to give a little protection from major blowout, fortunately with them being a single tube a little wander has never bothered any of mine as long as you mill your ends dead square to the tube.
    and I always use epoxy anyway.

    Froggie
    I have never had a blowout of any description. I hold the blank in the chuck on the lathe with the drill in the tailstock. Because the end of the blank is held in compression by the chuck it seems to prevent any blowout.
    Last edited by Terry B; 25th January 2007 at 11:13 AM. Reason: typo
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