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i need help with a big part with iterative

pcdmisstudent
Hey guys
so i have this big part, that the datums are defined by 3 datums points (three holes with sample hits that i did iterative with). I then constructed three theorietical planes (alignment planes) and defined those as ABC. Then i measured all the different features on the parted and called them out using FCF position.
the program works well, but some of my results gets weirdly high.
Ill upload pics with the datum targets (see black circles)
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  • The second problem i have are these two M8 holes.
    They re both called out with TP/parallelism to G/A/C. G is the radius you see to the left.
    One of the holes are within tolerance, at 0.5mm measured TP, the other hole at 2mm.
    According to machinist that would be impossible, they re made with the same tool.
    i did a quick control by screwing a M8 thread into the hole, and the thread went thu both holes. If one of the hole were acctually to be 2mm off position the thread wouldnt have gone thru both holes.
    Attached Files
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  • The second problem i have are these two M8 holes.
    They re both called out with TP/parallelism to G/A/C. G is the radius you see to the left.
    One of the holes are within tolerance, at 0.5mm measured TP, the other hole at 2mm.
    According to machinist that would be impossible, they re made with the same tool.
    i did a quick control by screwing a M8 thread into the hole, and the thread went thu both holes. If one of the hole were acctually to be 2mm off position the thread wouldnt have gone thru both holes.
    Attached Files
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