I have a little eBay 5x1 thuri that had oil in it when I got it. Water would bead on the surface, and the slurry would get clumpy and all stuck together. It sucked. Don't do it.
If you want to try something different why not try lather?
Are you having trouble with your thuri or just wanting to try something different?
I tried oil. Didn't do anything I liked. but it cleaned out ok. Try it if you must I get the best results just using water to slurry.
But if you are not getting the edges you expect from the thuri maybe you should look at the stone you use before it. The edge has to be really well finished for the thuri to work. Otherwise you're just shining up the bevel a little
I can relate.My report wouldn't be worth much
mainly because my attempts at sharpening seem to have no resemblance to actually sharpening a razor........
now that I have your attention....
I know that it is specifically verboten to use oil (does it make 'em melt like water and witches?) but how about soap and or glycerin. If they make a coti finish better, can a thuri be improved with the same technique?
OK, max on coti then go to thuri (and NO glycerin or soap)[. . .]
I can just see Aephilli looking at the escher label saying "USE NO OIL, LATHER, OR GREASE" then looking at the camera, then at the label, then the camera, then the label, then the camera, then he pours oil on the stone.