Manufacturing augers in the 1990s. 26:41 video.
https://www.youtube.com/watch?v=oR7hDSeECrQ
Previously:
https://www.homemadetools.net/forum/...920#post175625
https://www.homemadetools.net/forum/...549#post166702
https://www.homemadetools.net/forum/...193#post157781
https://www.homemadetools.net/forum/...545#post151438
https://www.homemadetools.net/forum/...157#post149707
