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  1. 13th October 2011, 10:30 PM #1
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    spidey4fun
    spidey4fun is offline Senior Member
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    Default Drilling a square hole!!

    I thought this was interesting.



    Brad
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  2. 13th October 2011 10:30 PM # ADS
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  3. 14th October 2011, 03:04 PM #2
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    PsychoPig7 is offline Senior Member
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    Hi Brad

    VERRRRRRY INTERESTING.

    Any idea who sells these and what is involved?

    Do you need a special software program, etc.

    Cheers
    Noel
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  4. 14th October 2011, 09:55 PM #3
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    Default

    I've no idea. The video was doing the email rounds at work and I thought you guys might like it.

    Brad
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  5. 14th October 2011, 10:09 PM #4
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    Default

    Probably no special software. Patents for square-hole drills by wobbling mechanism were issued as early as 1917 (US patent no. 1,250,450).

    The video at time 00:17 (click the parallel bars at the lower left to freeze) indicates the tool path.

    Cheers,
    Joe
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