Gear hobbing process.
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Previously:
https://www.homemadetools.net/forum/...964#post152981
https://www.homemadetools.net/forum/...934#post140623
https://www.homemadetools.net/forum/...817#post124493
https://www.homemadetools.net/forum/...515#post110808
https://www.homemadetools.net/forum/...850#post108698
