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RE: [SherlineCNC] RE: Modifying a Delran gear

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  • Andy Wander
    Alan:No need to part off the stock that was clamped, as long as you indicate the turned OD true after rechecking.______________________________________
    Message 1 of 7 , Dec 8, 2008
      Alan:

      No need to part off the stock that was clamped, as long as you indicate the turned OD true after rechecking.

      ______________________________________
      Andy Wander

      -----Original Message-----
      From: SherlineCNC@yahoogroups.com [mailto:SherlineCNC@yahoogroups.com] On Behalf Of Alan Marconett
      Sent: Monday, December 08, 2008 8:25 PM
      To: SherlineCNC@yahoogroups.com
      Subject: RE: [SherlineCNC] RE: Modifying a Delran gear

      Graham,

      OK, so then part off the part as well (to get rid of the stock that was
      clamped).

      I can see how that would improve the inside-outside reference. Something I
      hadn't done before.

      Alan KM6VV

      -----Original Message-----
      On Behalf Of Graham Hollis

      Alan

      I've never had much luck with marking jaws and trying to reposition that
      way. I'm saying take a cut on the outside of the stock at the same time
      you're boring the cavity to hold the gear and before you slit it. That way
      the outside surface and inside cavity are true with reference to each other.
      Then after slitting and with the gear held inside the cavity, chuck it up in
      the four jaw, true up the outside surface with the DTI and the gear should
      be perfectly centered for boring.

      Regards
      Graham
      www.d2nc.com


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    • Alan Marconett
      Graham, OK, so then part off the part as well (to get rid of the stock that was clamped). I can see how that would improve the inside-outside reference.
      Message 2 of 7 , Dec 8, 2008
        Graham,

        OK, so then part off the part as well (to get rid of the stock that was
        clamped).

        I can see how that would improve the inside-outside reference. Something I
        hadn't done before.

        Alan KM6VV

        -----Original Message-----
        On Behalf Of Graham Hollis

        Alan

        I've never had much luck with marking jaws and trying to reposition that
        way. I'm saying take a cut on the outside of the stock at the same time
        you're boring the cavity to hold the gear and before you slit it. That way
        the outside surface and inside cavity are true with reference to each other.
        Then after slitting and with the gear held inside the cavity, chuck it up in
        the four jaw, true up the outside surface with the DTI and the gear should
        be perfectly centered for boring.

        Regards
        Graham
        www.d2nc.com
      • Alan Marconett
        Hi Andy, OK, I get it (finally). One just needs a true surface to clock off! I hate having to part-off. Thanks, I missed that point! Alan KM6VV ... Behalf
        Message 3 of 7 , Dec 8, 2008
          Hi Andy,

          OK, I get it (finally). One just needs a "true" surface to clock off! I
          hate having to part-off.

          Thanks, I missed that point!

          Alan KM6VV

          -----Original Message-----
          Behalf Of Andy Wander


          Alan:

          No need to part off the stock that was clamped, as long as you indicate the
          turned OD true after rechecking.

          ______________________________________
          Andy Wander
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