Beautiful spiral shaving drill machining.
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Previously:
https://www.homemadetools.net/forum/...605#post132626
https://www.homemadetools.net/forum/...929#post133702
https://www.homemadetools.net/forum/...582#post132516
https://www.homemadetools.net/forum/...850#post108698
https://www.homemadetools.net/forum/...8594#post87797

