rough buff:
Brunswick starts and recommends starting with a 200 grit sanded ball. RB will smooth it out CONSIDERABLY and when finished, as they do, you wind up with what many call a compound finish. I'd guess it was the equivalent of a 1000 grit polish. If it looks neither like a dull ball for a polished ball, then you stopped the application of RB at the same point that Brunswick does.
BrunsRich, a Brunswick rep, has said that the above is ROUGHLY equivalent (NOT identical) to a 2000 grit matte/dull sanding.
HOWEVER, RB's instructions say that if you need more length, you can start at a higher grit, like 320. After the RB application (IF YOU DO IT WITH THE SAME PROCEDURE AS WAS DONE WITH THE 220 GRIT BALL) then the final finish will be finer, maybe like a 1500 compound finish. The next sanding level, 400 grit, will produce lore length, and so on down the line.
You can apply RB, a rubbing compound over any level sanding, but what you get depends on the ball.
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