Hi John,
I think you finally just got a motor that was actually strong enough that you couldnāt bog it down. So far as I know, nobodyās making (or has ever made) a motor (for buffing) that has any sort of auto-slowdown function. Never even heard of such a thing, and Iāve been tweaking jewelry equipment forā¦a while.
That said, I definitely second Joās warning about long hair. We had a 220V 3Ph standing buffer in my undergrad shop. Spinning 18" wheels. Woman with long hair went in there right before a crit, ājust to touch something upāā¦
(Famous last words. Almost literally in this case.) Yeah. Didnāt kill her, but did create an unholy mess, that ended up with me on a stepstool trying to get blood off the ceiling. Do NOT take those things for granted. Thatās when they bite.
Also, donāt ever buff loose chain. Wrap it around a baseball bat, or some other large diameter hunk of hardwood. MUCH safer.
Regards,
Brian