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How to polish to ~2 RMS with diamond lapping paste?  

May 29, 2009

Hi. I would like to know which lapping paste(Grain size) i should use to polish a rod from 8 RMS to 0~2 RMS. my options are
Grain size 1/2, 1, 2, 4, 8, 12
which is the best option?
or I can use general purpose lapping paste: grain size 1, 5, 7.5, 9, 9.5, 10
Or should I use Boron Carbide Lapping paste?
Any help would be appreciated
Thanks!

Ariel Moctezuma
Engineer - Champaign, IL, US