The motor in my tumbler (Lyman) is a small induction motor. No brushes, sparks or anything like that. It doesn't even have a switch. I put a splash of mineral spirits in mine without worry. I do leave it on the patio because of the noise so if it catches fire it won't hurt anything.
I don't use any waxes in mine because I just want clean. Slippery isn't a good thing with brass.
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Proud member of the NRA and Texas State Rifle Association. Registered and active voter.
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