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  • Runout

    Quick question pertaining to Runout,

    As a rule I was told, If you pick the datum last you will never go wrong??
    I this true?

    I construted a circle (cone with plane) and call it out to Datum -B-,
    the results was no deviation.
    If I reverse the picks (datum 1st) the results does have deviation which
    I believe to be correct.

    Thanks in advance for the input.

    Jay Gus

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