Concrete power screed. By Chris Of All Trades. 42:32 video:
https://www.youtube.com/watch?v=FWhKES7ST1c
Previously:
https://www.homemadetools.net/forum/...613#post178180
https://www.homemadetools.net/forum/...7760#post86196
https://www.homemadetools.net/forum/...318#post165807
