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  • Users: ktnorberg
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  1. ktnorberg

    Projection Error When Evaluating True Position of Threaded Hole Far away from Primary Datum

    On a Primary datum with a small surface, there is bound to be some amount of error in approximating this plane on CMM. My quality team is telling me there is projection error when evaluating the .030" true position on the opposite end of the part by keeping datum A as primary. The true position...

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