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Re: Spinning Cylinders
While we have a machine shop I think our method could be done with just a drill press.
We make a free spinning roller (Al tube with bearings pressed in the ends) attached to the frame using hex head cap bolts with the heads cut off.
Mount a gear or pulley to one end with 4 screw.
The gear method requires a motor mounted closely to direct drive the gear on the roller. The pulley allows for a remote motor mount.
Having the drive right on the end of the roller only takes up room that the balls wouldn't go into anyway.
Hope that helps.
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