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How to make a Norton 4k rougher...pick up a 1K. How to make a 8k finer...pick up a 16 or 20K. Simple really!:rofl2:

Yep, what he said. You cant make a 8k finer nor a 1k rougher.

For new Norton stones, you need to remove close to 1/8" of "skin" to get to the proper honing materials. This is the ONLY issue that the Norton stones have. I recommend picking up a DMT 325 that is...