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SH,

The chromium oxide we want should be a 1/2 micron powder or the same suspended in some type of leather friendly vehicle. The stuff that comes as a polishing wheel charging compound in a wax...

English,

Who is this supplier of incredibly cheap Cr2O3 in whatever grade needed?

SH,

The ink is a very fine abrasive, I believe some say it's effectively 1/10-1/4 micron and paper is also very slightly abrasive. So using a piece of newsprint with the greatest amount of black...