Scuka1 t1_jedip7z wrote
Reply to comment by buildyourown in Eli5: On a production line, how do they make a car, plane or anything else be identical from one another without differences? by SideburnG
Which is why I said "nearly identical", not "identical".
Tools wear, but to the naked eye that's not visible. There's also quality control and preventitive maintenance systems in place to make sure that tools don't wear out to the point where they start producing non-functional parts.
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