Plow. By Mateusz Doniec. 6:42 video:
https://www.youtube.com/watch?v=2ujTeG2ndSU
Previously:
https://www.homemadetools.net/forum/...682#post151831
https://www.homemadetools.net/forum/...020#post140840
https://www.homemadetools.net/forum/...610#post128369
https://www.homemadetools.net/forum/...036#post109357
https://www.homemadetools.net/forum/...4804#post80611