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Thread: TPI ?

  1. #1
    Join Date
    Aug 2008
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    Reno, Nv
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    TPI ?

    Anyone have a real quick TPI for Jet Mini tailstock?
    Your Respiratory Therapist wears Combat boots

  2. #2
    Join Date
    Aug 2008
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    It's what I can't do
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  3. #3
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    Aug 2008
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    Nothing that bad. I'm making my first peppermill and wanted to drill a specific depth. I have a chart that, if you put in your tpi, it tells you how far per revolution. I went with the old tape measure method and got 1/16" per turn.
    Your Respiratory Therapist wears Combat boots

  4. #4
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    Jon

    God and family, the rest is icing on the cake. I'm so far behind, I think I'm in first place!

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  5. #5
    Join Date
    Aug 2008
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    Reno, Nv
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    Thank's Jonathan, I have the head stock tpi. Just got off the phone with Jet tech support and even they didn't know the TPI of the tail stock. On the bright side, they're having an engineer call me back. It's nice to know I didn't get the dump-off...yet. When a DVR hit's my doorstep next year, I hope the same thing doesn't happen.
    Your Respiratory Therapist wears Combat boots

  6. #6
    Join Date
    Dec 2007
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    Tellico Plains, Tennessee
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    Jim,
    It's a pretty fine thread as I remember, possibly a 13 or 20, my guess is likely a 13..
    I've stripped the threads of of 2 bolts so far, but am only guessing on the threads.
    Chuck
    Tellico Plains, TN
    https://www.etsy.com/shop/TellicoTurnings
    My parents taught me to respect my elders, but it's getting harder and harder to find any.
    If you go looking for trouble, it will usually find you.

  7. #7
    Join Date
    Jan 2007
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    Sacramento, CA
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    Lemme go measure ... (you can literally count them, btw)

    brb...
    Jason Beam
    Sacramento, CA

  8. #8
    Join Date
    Jan 2007
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    Sacramento, CA
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    Oh sure - it's an inside thread (unless I wanna tear it apart, i don't :P).

    Near as I can tell it's 18tpi. 16tpi is too coarse and 20tpi seems too fine. My 18tpi gauge seems to fit the best.
    Jason Beam
    Sacramento, CA

  9. #9
    Join Date
    Jul 2008
    Location
    Hardinsburg, KY
    Posts
    277
    I look forward to hearing what the engineer tell you. I'm betting that its none of the above. I bet it is metric

  10. #10
    Join Date
    Dec 2007
    Location
    lutefisk capitol, USA
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    485
    My guess on the tailstock end is 3/4-16. Just a shot in the dark.

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