Good safety warning, Mark.
I changed to twisted wire rotary brushes many years ago, mfg Germany. And I also changed to using them on slower but more powerful drives. I used to absorb a share of wires from high-speed straight brushes, though I always wear good gear. That absorbing dropped way off when I made the two changes: twisted wire and a slower, stronger drive.
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Kent
http://www.tinmantech.com
"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.
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