Roto dump truck.
https://www.youtube.com/watch?v=bDSWqBSmoZk
Previously:
https://www.homemadetools.net/forum/...349#post165904
https://www.homemadetools.net/forum/...783#post140169
https://www.homemadetools.net/forum/...215#post101010
https://www.homemadetools.net/forum/...528#post177955
https://www.homemadetools.net/forum/...730#post167300
https://www.homemadetools.net/forum/...583#post162746
https://www.homemadetools.net/forum/...191#post153828