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  1. #16
    Join Date
    Jun 2007
    Location
    sydney ( st marys )
    Age
    64
    Posts
    4,887

    Default

    If the thread you cut was not 1.5 but what was set on the gearbox you may not of been able to drop in anywhere.


    Sent from my T85 using Tapatalk

  2. #17
    Join Date
    Mar 2017
    Location
    Sydney between denial & paranoia
    Posts
    88

    Default

    Success!

    But I can't figure out what caused the problems before except your suggestion, Pipeclay.

    But that means I had something askew in my settings because this time I still just dropped in without reference to the thread dial and I did open the halfnuts at the shoulder.


    20201226_172611.jpg

    20201226_175520.jpg

    Thanks to those who posted suggestions and all the best for the New Year.

  3. #18
    Join Date
    Mar 2017
    Location
    Sydney between denial & paranoia
    Posts
    88

    Default

    Task complete, finally finished the caps to go with them.

    20201231_113829.jpg

    Actually, it was learning exercise cutting an internal thread into a blind hole and finishing the outside.

  4. #19
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Boris, Guys,

    If the thread being cut is a multiple of the leadscrew then you can drop in anywhere ! This applies to an imperial machine and I assume metric as well.

    Cutting threads in a blind hole, its safer to cut from the inside out away from the chuck.

    Anyway from the pictures it looks to be all good.
    Best Regards:
    Baron J.

  5. #20
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    Nice job.
    Chris

  6. #21
    Join Date
    Jan 2009
    Location
    Holbrook, NSW
    Age
    73
    Posts
    490

    Default

    Quote Originally Posted by jack620 View Post
    I've always believed the line between the 18 and 45 is in the wrong place, because there's no way you could get the same thread pitch with two different gears and with the levers in the same positions. I reckon that line should be in line with the line below the "B".
    5H592.jpg
    quite correct, the line was repositioned later, as shown on the current new plates.

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