I wonder if this could've solved by making 2 half drums out of say fibre glass and bolting them on to an eggbeater, effectively making it a drum but without using the drum for structural purposes. They might even let you into the drum-off!
I already tried that and it didn't go well at all! The centrifugal force threw the drum halves off the beater, which managed to cut one half to shreds.
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