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Recent content by Billykeys

  1. Billykeys

    Compound datum from 2 planes (non-parallel, non-perpendicular)

    Thanks all. So my "physical interpretation" would be to have a block with a flat plane that would rest on -A-. In most GD&T examples, you would then have a 90° plane that you would slide against the secondary datum. In this case, that second surface would be at 100° instead, you'd slide it...
  2. Billykeys

    Compound datum from 2 planes (non-parallel, non-perpendicular)

    I'm trying to agree on a datum system between my engineers and a supplier... The part has two primary functional planes, unfortunately not perpendicular. Normally one plane would be primary, slide against the second. What is the proper way to establish a coordinate system from these 2 planes...

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