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Here we go AGAIN... (concentricity and alignments)

Another instance of my programmer and I butting heads. First off, I want to ask... Is an alignment needed to measure the concentricity of 2 circles? If so, can a proper alignment be made with paint on the plane that we are leveling the part to? He says that even with paint (very uneven paint) on the part, the concentricity will be accurate. Again, be gentle. Slight smile
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  • This was my first thought as well.
    The cmm needs to know how the part sits before it can decide how to report it.


    Yeah - just because you don't specify what you are leveled on doesn't mean you aren't leveled on something anyway! But what would it be? Maybe not what makes sense... Your circle may look like an ellipse to pcdmis.

    If you consciously level on something then you know for sure which way is up!
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  • This was my first thought as well.
    The cmm needs to know how the part sits before it can decide how to report it.


    Yeah - just because you don't specify what you are leveled on doesn't mean you aren't leveled on something anyway! But what would it be? Maybe not what makes sense... Your circle may look like an ellipse to pcdmis.

    If you consciously level on something then you know for sure which way is up!
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