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Old January 28, 2013, 08:54 PM   #6
Bart B.
Senior Member
Join Date: February 15, 2009
Posts: 6,318
rrawhide asks if there a recommended RPM for turning/polishing brass?

Yes, about 60 to 120 rpm for the tumbler; at least 1 revolution per second to no more than 2 revolutions per second. This is for tumblers of 10 to 12 inches in diameter.

Any faster with media and cases spinning around starts getting into the accident range.

A tumbler rotating at 700 rpm turns almost 12 revolutions per second. Way too fast. Is someone getting a vibrator mixed up with a tumbler for what to call it?
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