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True Position in 3 axis???

1CMM4ME
Ok, I have read the post regarding this so called argument that my boss and I got into today. He told me that you cannot measure true position in 3 axis, as I told him he was wrong. I know it depends on the way the FCF calls it out, but I tried to explain to him that it is possible to measure TP in 3 axis.
I have seen the formulas, so I know it's possible. I just wish I could get one of you gurus to reply back explaining that it is possible and why. I see the picture but he does not. I do not like to get into pissing matches with upper management, but I have learned a h**ll of alot from you guys, and I know this is possible. So if one of you fine gentleman can back me up on this, I would very much appreciate it. Thank you very much.
Now I am going to get a cold beer.Smiley
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  • We have a part here with a spherical cut and in order to locate it you have to have more than 2 axis. I'm not sure I am folowing your question in regards to datums.
    It SHOULD be called out to 3 datums in a VAST majority of cases. IF you need to use 3-D or 2-D (perp-to-cl) will depend on the application, if you don't know, you need to ask. 99.95234% of the time in auto motive sheet-metal, it will be perp-to-cl (or 2-D TP).
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  • We have a part here with a spherical cut and in order to locate it you have to have more than 2 axis. I'm not sure I am folowing your question in regards to datums.
    It SHOULD be called out to 3 datums in a VAST majority of cases. IF you need to use 3-D or 2-D (perp-to-cl) will depend on the application, if you don't know, you need to ask. 99.95234% of the time in auto motive sheet-metal, it will be perp-to-cl (or 2-D TP).
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