I tried a little of experiment this evening on these two coticules on some of my stainless-steel blades. On the larger stone I used soap and water and finished on the smaller Old Rock Coti with running water until the blade started to stick. These blades were cutting hanging hair though the length of both blades. I will use razors though the rest of the week. I'm still trying figure out the larger stone and it feels as smooth as the smaller Old Rock but cuts a little faster.
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