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My dilemma is with Automotive customers who reject my GR&R because of low ndc of 2 and %R&R at 30%.
Our parts are high tolerance molded parts. 50 cavity shots that vary less than .002" from part to part. Customer tolerance requirements are fairly wide at +/- .010". Our parts are virtually never out of spec and always in statistical control.
We typically use 6" digital verniers with .0005" readout.
Due to the lack of part to part variation, I can't get an acceptable GR&R. Buying Verniers that would readout to 5 places isn't financially acceptable nor practical.
What other options do i have? The customer QA zealots won't budge and hold me by my PPAPs to force me to do something.
Any help is greatly appreciated.
Our parts are high tolerance molded parts. 50 cavity shots that vary less than .002" from part to part. Customer tolerance requirements are fairly wide at +/- .010". Our parts are virtually never out of spec and always in statistical control.
We typically use 6" digital verniers with .0005" readout.
Due to the lack of part to part variation, I can't get an acceptable GR&R. Buying Verniers that would readout to 5 places isn't financially acceptable nor practical.
What other options do i have? The customer QA zealots won't budge and hold me by my PPAPs to force me to do something.
Any help is greatly appreciated.
