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OK, here's what little I can conclude so far, after running the corncob mix for about 24 hours:

BBW grit will shake loose from a paper towel but Norton 8k grit will not.

Can't really say...

I'll give it a try tomorrow or the next day. Got some new walnut shell and Turtle Wax rubbing compound, and have a blade running in that right now. I had started with Cabela's red-treated walnut...

I've been saving lapped grit from my coticules and Norton 4/8k to try as polishing compound with my corn cob media. To save it I've just been wiping it off with a paper towel (the same towel for many...