Vibrating precast concrete mold - GIF

Vibrating precast concrete mold.

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Previously:

https://www.homemadetools.net/forum/...971#post198828
https://www.homemadetools.net/forum/...913#post164139
https://www.homemadetools.net/forum/...349#post110233
https://www.homemadetools.net/forum/...180#post188108
https://www.homemadetools.net/forum/...790#post194151
https://www.homemadetools.net/forum/...478#post173753

I am a bit surprised that toss that extra concrete on the floor. As fast as they strip that mold, they can make a bunch of those in a day. That much waste each time would add up quickly. Maybe they just shovel it back into the mixer each time.