Pressure sprayer from chainsaw. By Make it Extreme. 14:58 video:
https://www.youtube.com/watch?v=43ev1OaDsI0
Previously:
https://www.homemadetools.net/forum/...258#post154090
https://www.homemadetools.net/forum/...959#post148917
https://www.homemadetools.net/forum/...986#post144938
https://www.homemadetools.net/forum/...876#post164000
