Life of a Gear by UREindhoven. 2:57 video.
https://www.youtube.com/watch?v=r03lcoPOzVo
Previously:
https://www.homemadetools.net/forum/...379#post131384
https://www.homemadetools.net/forum/...166#post176572
https://www.homemadetools.net/forum/...561#post178091
https://www.homemadetools.net/forum/...689#post178490
