Giant mill drum lathe. 3:33 video:
https://www.youtube.com/watch?v=gdYqfWcr4wE
Previously:
https://www.homemadetools.net/forum/...708#post133110
https://www.homemadetools.net/forum/...3703#post99821
https://www.homemadetools.net/forum/...939#post171628
https://www.homemadetools.net/forum/...2828#post97238
https://www.homemadetools.net/forum/...655#post167066
https://www.homemadetools.net/forum/...572#post147444