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42861Re: [atlas_craftsman] Metric Threading on a 12x36

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  • dheylen dheylen
    May 2 5:23 AM
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      HI Jon,
      Buy a book without it your lathe is just a cutter! The
      book is just as important as you lathe. Gear sets are
      on ebay from time to time and you will need them too!
      Have fun, Dewayne

      --- Jon Elson <elson@...> wrote:

      > r_corriveau wrote:
      >
      > >I am a new owner, as of last week.
      > >
      > >Jumping the gun, I am trying to figure out how to
      > make metric
      > >threads.
      > >
      > >I did the calculations and found the gear box
      > settings in tpi which
      > >were close to the metric pitchs.
      > >
      > >For better accuracy I could use a 127T gear. Does
      > anyone have any
      > >more info on this. Where does it get installed and
      > with what other
      > >gear 120 or 100? Where can I get such gears? What
      > are the specs of
      > >these gears? I have seen 14.5 degree pressure
      > angle 16 pitch...
      > >
      > >
      > >
      > A 127 tooth gear in the same diametral pitch would
      > be really big. What one
      > could do is buy a set of 100 and 127 tooth gears in
      > some smaller diametral
      > pitch, and attach those to some gears in the the
      > same pitch as the rest
      > of the
      > change gears, or just bore and slot them to fit on
      > the same bushings as
      > the rest
      > of them. I don't think anyone has a ready-made set
      > of gears that will
      > just drop
      > into the gear train. I'd check with such outfits as
      > Boston Gear and SDP
      > to see
      > what they have.
      >
      > Jon
      >
      >
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