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And use a permanent marker on a rough side to indicate which side is which one :)[/QUOTE]

No need to put any marker on the honing surface, just put an arrow on the side pointing towards the...

I think you got it just right! I would get up to 1K and FLAT on both sides first.... then burnish one side with chisels, a hard nagura used dry, a hard high grit stone dry, and/or my favorite way:...

From what I see you got e really good and hard one. Properly prepared it should provide a great high grit polishing surface. Euclid has presented to you just what you need to make it really flat,...