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: re: rock tumbler/ball mill?

updated sun 14 jan 07


Ivor and Olive Lewis on fri 12 jan 07

I seem to recall, having done both, that a mill for pulverising minerals =
has to rotate a bit faster than one that is abrading the surface of the =
gemstone material. So a Mill designed for gemstones runs slowly while =
one used to reduce quartz to an impalpable power runs fast.

I'll see if I can find some information.

Best regards,