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Cpk clears 1.33 but the customer still finds bad parts — where do you look first?
This argument comes up on nearly every capability review I have sat in, and I have never seen it settled the same way twice. So it may as well be the first question on this forum. The situation, in the abstract: a machined feature reports a Cpk comfortably above the 1.33 the customer asks for. The study looks clean. T
Rajadurai R1· asked