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GD&T Help_Sanity Check

DAN_M
Can someone help me explain this GD&T on the right to my management?

A is a plane on top facing Z+, D is the inside diameter, C is the width at 12oclock. We're looking specifically at the composite portion of the DRF.



Thank you all
Parents
  • My management understands TP to be purely diametrical. They didn't understand that the lack of datums on the bottom means a 2-d tolerance unto itself.

    They were expecting to see a +/- 0.0007 and for me to cut it down to +/- 0.0005 for a manufacturing tolerance.

    I applied a +/- 0.0008 (to fall within the true +/-0.001) for the 2-D basic and that threw up a red flag with them.

    Thanks all for the sanity check. You've confirmed my train of thought.
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  • My management understands TP to be purely diametrical. They didn't understand that the lack of datums on the bottom means a 2-d tolerance unto itself.

    They were expecting to see a +/- 0.0007 and for me to cut it down to +/- 0.0005 for a manufacturing tolerance.

    I applied a +/- 0.0008 (to fall within the true +/-0.001) for the 2-D basic and that threw up a red flag with them.

    Thanks all for the sanity check. You've confirmed my train of thought.
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