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  1. #1
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    Jun 2014
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    Default air opperated draw bar

    Hi everyone I am a raw beginner when it comes to machining. As I have just brought a mill I am in need of some help. The mill has a air operated drawbar The vice that come with the mill is hydraulic. How do you know when these items are tight enough.

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  3. #2
    Join Date
    Aug 2008
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    Default

    I guess you will have to trust the drawbar...

    Just be aware not all milling arbours use the same thread... I have a mill with an ISO30 spindle, and the arbours I put it in come with all manner of drawbar threads... The standard for ISO30 is 12mm coarse, but I have one with a 12mm fine thread, another is 1/2" whitworth and I know any NT30 (US variant of ISO30) arbours will be 1/2" UNC.

    Never used a hydraulic vise so know nothing there...
    Light red, the colour of choice for the discerning man.

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