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by Bendingo 2297 days ago
Yes, but these items (camshaft, gearbox etc) are not made "by hand".
1 comments
varjag 2296 days ago
Camshafts were turned then ground manually on line lathes and surface grinders for many decades before advent of CNC, with about the same degree of dimensional precision as today.

It is more an issue of quality control and inspection routines.

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