Step 4The rollers
I took the rollers into the campus wood shop and turned them on the lathe, making two 7" long rollers that were 5" across. A friend and I then drilled a 3/4" hole through them on the drill press. The drilled hole accommodates a 3/4" zinc-plated threaded rod that I used to mount it in the mash-box.
In retrospect, it might have been easier to drill first in the block, and then turn them on the lathe. Once the drill bit got part way into the roller they sure wanted to spin with it! I think it would have been easier to clamp a block than a round roller.
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