Sprayer booms. By Rainfall Projects. 14:26 video:
https://www.youtube.com/watch?v=ZFV0fozrvXI
Previously:
https://www.homemadetools.net/forum/...993#post164497
https://www.homemadetools.net/forum/...019#post137834
https://www.homemadetools.net/forum/...771#post136877
https://www.homemadetools.net/forum/...328#post135144
https://www.homemadetools.net/forum/...154#post120977
