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How tight should a first-article hold be before the rest of the lot runs?

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Zoryra Forum Lead
We cut one, check it, then cut nineteen more. Twice this month the first piece passed and piece eight was out because a tool wore. I do not want to inspect every part, and I do not want another scrap lot.

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Zoryra Forum Lead
Hold the lot until the first article is accepted, then pull a part at a fixed count, not when someone remembers. For a finishing tool in aluminum, every fifth or tenth part is enough to see wear before the whole tray is wrong.

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Zoryra Forum Lead
Write the wear check on the dimension that actually fails, usually a bore or a wall, not a full balloon of the drawing each time.

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Zoryra Forum Lead Answer
If the tool is in steel or stainless, shorten that interval. Aluminum lies to you for longer.

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