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My Washita is lapped on one side to 60 grit and the other is 320 grit. I have never tried to go directly to a finisher. I suspect if I lapped the stone differently or just stayed on the stone longer...

My washita had a small hone. I was concerned addition material might break off around the hole so I filled it with instant glue. then lapped it flat. No problems yet?

The razor should be shave ready at the 8K level, before the finishing stone. I frequently go to my Arks from a 12k

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I would expect the stone to be flat but I would check both sides anyway. I leave one side of my stone as it came from the factory when...

My only experience with a good coticule edge was on a Sheffield blade sharpened by an established hone mister. I did not like the edge so took it to my Black Ark and now the edge is excellent. YMMV

I have several Ark finishers, True hard, Black, Translucent I can't tell the difference in the edge produced they are all excellent edges. My blue black sometimes feels like a superior edge but they...