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Your image is blocked at work , but I assume it is the DMT. Just draw a pencil grid on the coti and lap under running water, and you are good to go when the grid is gone. :)

Hehe just poking some fun at you, I have an even smaller coti I use as a finisher... :)

Promise to ask here before you buy more hones, so far all you got is slurry stones... ;)