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Basic Dimensions and General Feature Control Frame

seppley
I have a quick question.

I have been told by corporate engineering to take the General Notes, Surface Profile Feature Contrl Frame on the drawing and apply it's tolerance to the basic dimensions. Is this the proper way to utilize basic dimensions? I thought that basic dims were "Theoretical Exact Dimensions" and had no tolerance. How do you guys report them? I have just been reporting them with a zero +/- tolerance.

Thanks

Sam
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  • Your BASIC dimensions are your theo dimensions that will then be controlled with a FEATURE CONTROL FRAME. You are correct as they have no tolerance, thats the function of the FCF. A general note on a print contolling "profile" would be for any dimension / feature not specificly dimensioned on that print. As in the old "REFER TO CAD MODEL FOR PART GEOMETRY" .
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  • Your BASIC dimensions are your theo dimensions that will then be controlled with a FEATURE CONTROL FRAME. You are correct as they have no tolerance, thats the function of the FCF. A general note on a print contolling "profile" would be for any dimension / feature not specificly dimensioned on that print. As in the old "REFER TO CAD MODEL FOR PART GEOMETRY" .
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