| i only used the 2 grits for the thread.. i normally use 400 then 600 then 1200 then 1500 and then sometimes 2000....
the difference is that when you are trying to get rid of the machine marks, you should be going in small circles....like waxing a car...and then in the reverse.
when doing your final "shine", circles will work, but you'll get a brighter, smoother finish if you go in straight lines.....up the paper and back down...on the same path (back and forth).
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