Dieselpunk clamp. By Mirock's Toolworks. 13:13 video:
https://www.youtube.com/watch?v=8GWKg1c0TSU
Previously:
https://www.homemadetools.net/forum/...672#post182637
https://www.homemadetools.net/forum/...258#post180925
https://www.homemadetools.net/forum/...176#post180499
https://www.homemadetools.net/forum/...945#post179577
