Select Your Datums Based Upon Function - Not Production (#169)
(In accordance with Y14.5M-1994 standard)
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Often production complains about the datum features selected. In general, datum features should be selected based on function-not on how the part will be produced. Two datum reference frames are used on the part shown below. The datum reference frame established by datum features A, B and C was selected because these are the features that locate …
