I find that the arbor mounted diamond wheels that fit into a drill or a rotary tool
work well with the wheel and tungsten submerged in a vat of water. In this manner you can sharpen without the grey tungsten dust ending up in your lungs or on your floor. The stuff really adds up fast. I already have a cake of fine dust at the bottom of a small clear plastic container full of water I was sharpening in and I am really glad I did not just inhale half of that grinding it the way everyone else does.
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