I believe it means this:
Many times, people will buff a ball that's been sanded (whether 600 grit US or 4000 grit Abralon) to smooth out the sanding lines or just to smooth it in general. Micro-fiber towels do have a slight degree of abrasiveness and when used with a spinner can make a ball's surface finer to a slight degree.
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"None are so blind as those who will not see."
Edited on 7/27/2009 10:05 PM