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The agitators are some blocks of nylon or plastic I got from a friend. They were sealed to the pvc with silicone sealant and screwed from the outside.
Before I got the nylon I was just going to...

This thread inspired me when it was first started. Scrounged a few bits from the local scrap deal ( tube, motor and frame) , bought some bearings and bolts from tradezone store. S/S media and pick...