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Recent content by The Fahj 122

  1. The Fahj 122

    Perpendicularity to 3 datums

    Thank you everyone for the clarification. I've been a machinist for 38 years and have never seen a perpendicularity callout like this. It's always been relative to a single plane or axis. @Burunduk the 18 basic should not have been basic in my crappy recreation of my customer drawing. It's a...
  2. The Fahj 122

    Perpendicularity to 3 datums

    It's not my drawing, I'm making the part. The is a "rough" recreation on the drawing since I cannot share the actual drawing. The perp callout and the way they're referencing the 3 datums is what I am questioning. I believe they actually have the CF with the perp callout.
  3. The Fahj 122

    Perpendicularity to 3 datums

    I attached a rough drawing
  4. The Fahj 122

    Perpendicularity to 3 datums

    Here's a rough drawing of the callout in question. Let me know if you need more info and thanks for your help
  5. The Fahj 122

    Perpendicularity to 3 datums

    Greetings all, I'm working on a part that has a perpendicularity callout referencing 3 datums. Datum -A- is a flat face, datum -B- is a hole perpendicular to -A- and datum -C- is also a hole on the same face as -B-. This seems incorrect how they have it called out. I understand they are...

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