Gantry crane. By HolzFlo.
11:53 video:
https://www.youtube.com/watch?v=TIvrRIK8MmE
8:54 video:
https://www.youtube.com/watch?v=pQ93cXcfxpY
Previously:
https://www.homemadetools.net/forum/...112#post157486
https://www.homemadetools.net/forum/...263#post150185
https://www.homemadetools.net/forum/...735#post178736
https://www.homemadetools.net/forum/...212#post180640
