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one that is to course. Remmber the coticule is supposed to be a finishing stone, therefore very fine. Some of the newer ones seem to be a bit courser than the vintage stones and therefore unusable as...

I said it looks "like" or similiar to the scratch pattern after the 4k. Doesnt mean it is the exact same grit size. But the fact remains that if the bevel looks less polished after the coticule than...

use a microscope to look at the bevel after it comes off the 8k norton, then again after the coticle. Does the coticule make the bevel more polished? or does it make the bevel look like it was just...

I had the same problem. I concluded that my particular coticule was to course. Seems a lot of the newer ones are not as fine grained as the vintage coticules.