Two other functions of a "slurry stone" is as a cleaning stone and as a tool for refreshing the cutting surface. But not all stones need to be cleaned or refreshed (supposedly). However, when I refresh/clean the surfaces of my hones I seem to get much better results. YMMV.

Two days ago I had one of new members (purvis) over to my house. He had a Spyderco UF that was a bit dirty. I took a piece of old barber hone and used it as a "rubbing" stone on the Spyderco UF . It worked very well to clean the "swarf" off the hone. Maybe it would also work with Shaptons or other ceramic hones? I know it works with other barber hones. I do have a bunch of the "rubbing stones" available if anyone wants to try them. Just send me a PM.

Sorry for the thread hijack,