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You should be ok just going with the 325, but the 600 won't hurt. The main thing is that you don't want to feel that graininess. Once it's gone, you're good to go.

Have fun,

Lynn

Remember that a Norton 4K new has a grainy feel to it. I am still finding that I need to lap about 1/8 inch away to get past that graininess. Once the 4K side starts feeling smooth, you should be...

I think setting the bevel on a Norton 4K really amounts to what you are asking. The amount of strokes involved. So part of this really depends on the technique you are using. The 4K can still be...