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Type: Posts; User: oldtech

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  1. 27th October 2014, 02:47 PM

    Thread: Jacobs #50 Collet Chuck for my Hercus 260

    by oldtech
    Replies
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    2,683

    Register

    While the Hercus, Sheraton etc don't have a separate diameter on the spindle, the short unthreaded portion of the spindle after the threaded section forms a register. If you measure the od of the...
  2. 23rd October 2014, 06:18 PM

    Thread: Back gear pressure angle

    by oldtech
    Replies
    9
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    1,948

    Pressure Angle etc

    The 20deg pa is the stronger; 14.4deg the quieter. Yes it is common to cut say 23 teeth on a blank sized for 24 teeth, but you need a machine that generates gears (ie shaper or hob) to cut proflile...
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