Giant marble chainsaw.
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16:18 source video:
https://www.youtube.com/watch?v=rEsC4VlXLmE
More: https://www.fantinispa.it/en/chain-saw-machines/
Previously:
https://www.homemadetools.net/forum/...677#post159400
https://www.homemadetools.net/forum/...126#post134426
https://www.homemadetools.net/forum/...454#post116921
https://www.homemadetools.net/forum/...2093#post95470
https://www.homemadetools.net/forum/...096#post130120
https://www.homemadetools.net/forum/...354#post107152
