as a coticule user i no for a fact slurry does and can dull an edge , My question is does a escher with slurry have the same efect. i will be using as a finisher after i get a very fine edge on coticule, with water. It does say on the label to use with slurry. I've not got the scher just yet as it is on its way. so i'm just doing some research before it arives. Most people on the forum use with water as finisher some with slurry but not many.