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  1. MechEng1744

    Question on basic dim/ Datum Scheme

    Tarator, I hadn't noticed that until you point it out, but I do see your point there. Datum C is controlled and defined by the width of the feature, but there is nothing controlling it to A or B, so theoretically, those two features could be say 4 degrees off of A and B and it would be okay per...
  2. MechEng1744

    Question on basic dim/ Datum Scheme

    Here is the same engineer using the center of parallel FoS again on a sheet metal component. These surface profiles seem fully defined to me, as we assume C is a width datum feature again. Thoughts?
  3. MechEng1744

    Question on basic dim/ Datum Scheme

    Tarator, this is likely what my colleague was implying with the 2X callout. Agreed, perhaps slot is a poor term. Thanks for the responses.
  4. MechEng1744

    Question on basic dim/ Datum Scheme

    chez, looking at the drawing some more. I agree the 2X 0.75 doesnt add to the drawing, but I dont think its technically invalid, it just doesnt provide value. If I could REV easily I would, but I dont think the drawing is invalid.
  5. MechEng1744

    Question on basic dim/ Datum Scheme

    Will do thank you. The scheme used in the green box above is valid, correct? It is stating datum B is in the center of the slot, left side is a theoretical 0.75 away, and slot width is .150, correct?
  6. MechEng1744

    Question on basic dim/ Datum Scheme

    I believe this means datum B is the center of the slot, is this correct?
  7. MechEng1744

    Question on basic dim/ Datum Scheme

    Another engineer made drawings at our company, and our inspection group is questioning this practice. Do all basic DIM HAVE to come from datums? Is this a valid scheme? If you can point me somewhere in y14.5 that would be helpful. I have a feeling this is legal, but I cant find out how... Thanks!

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