hi! everybody I've been trying to hone a king cutter straigth razor, first I use a 1200 king waterstone, later a 4000 norton waterstone and sometimes I try to finish it with a 8000 naniwa or a yellow coticule (no slurry just water). the razor metal seems to be very hard and it is in the final stage either with the naniwa or the coticule that I can not see any metal being taken off. both stones stayed clear without the black powder from the straigth. does any body knows about a harder stone for this kind of razor?
thank you