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You might be right, but the appearance of the 8k edge could just as likely be the result of the 1k, with the 8k simply failing to remove the remnants of the 1k.

A couple of things. First, I'm not certain that Norton makes a 1k/8k combo. It might, since I'm not all that familiar with the Norton combo hones. I have 7 Nortons but all are single grit hones. ...