We have a part, Datum A is a flat planer surface about 60" X 10"
Datum A has a flattness tolerance of .010.
There are two 3" diameter areas on -A- that are held to a tighter flattness.
The flattness of these areas are .005 with no Datum referenced (not even A)
The customer tells us (verbally) they locate on these two areas in the next higher assembly clamping the part down on them tight.
Opinions on how to locate Datum A???
Note Also: The part is distorted.
Datum A has a flattness tolerance of .010.
There are two 3" diameter areas on -A- that are held to a tighter flattness.
The flattness of these areas are .005 with no Datum referenced (not even A)
The customer tells us (verbally) they locate on these two areas in the next higher assembly clamping the part down on them tight.
Opinions on how to locate Datum A???
Note Also: The part is distorted.
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