Micro machining for watch parts.
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Previously:
https://www.homemadetools.net/forum/...948#post124957
https://www.homemadetools.net/forum/...155#post126096
https://www.homemadetools.net/forum/...336#post116476
https://www.homemadetools.net/forum/...459#post116947
https://www.homemadetools.net/forum/...061#post115398
https://www.homemadetools.net/forum/...321#post103950