Quote Originally Posted by dinnermint View Post
The Morley & Sons razor I have been using is starting to taper off. Not tugging or pulling, but giving my chin pimples and giving a weeper when I shave. Unfortunately that means 25ish shave are the limit for me for now on a thuri edge.

Time to try to see how long until a coti edge gives me those issues. Touched up this Koken Army and Navy razor, starting Naniwa 5k & 8k then this troublesome coti.

A little story on this hone. It is my first coti, probably bought 5 or 6 years ago. It has always been the most touchy stone. You go too hard and one little grain would put dings in the edge, destroying the bevel in one spot. I tried concaving the stone as others have done and didn't like it, but got rid of the troublesome spot. Reflattened it and resurfaced in my standard fashion. Sandpaper to 1000grit or better, then gently smooth the surface with a slurry stone under running water.

Finished the edge with 200ish water only laps, rinsing the stone every 20ish laps and keeping it well watered.

Stropping done on my Kanayama 30k, 100 linen and 150 leather. Shpuld have gone 150 linen/200 leather, but it was late.

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A while back I had similar problems with a convex LVRR coticule bout that I was playing with. When I would slurry the stone it would shed particles, leaving small voids in the stone. It was and still is an aggressive stone but the resulting texture was unacceptable to me. I lightly retextured it with a diamond plate and started over.... with the same results. The stone was put away for a few months in frustration.
A bit later it was revisited with a different mindset. Without slurry, I honed three different knives on this stone over about a month's time. The coti started to show a burnished looking shine and much improved surface texture. Due to the aggressive nature of this particular stone I now use it without a slurry stone for pre-finish work.
I am not implying that this is the problem with your coti, just that these wild caught hones can sometimes refuse to fall neatly within the parameters we humans tend to set.