Try the stone with slurry generated with nagura or DMT, and see how it does vs 4k scratches. My Narutaki can work 5k scrtaches in no time when I use slurry.
Quote Originally Posted by IanS View Post
Ok, just polished up a blade on it (has two microchips I've gotten about 50% out so far in 45 mins on this stone. I also tested the tang of a razor on a corner I wont need for razors.


Tang: With maximum slurry it cuts a tad slower than my 4k king. It leaves a scratch pattern at 100x that is about as small as I think can be noticed. It's got maybe 3-6 degrees of angle where the scratches catch light and show up as very very tiny scratches.

Edge: With just the slurry that comes from honing (I used a little more pressure the first few minutes this time as well). It cuts slow... It took about half an hour to polish out the 4k king scratches. At 100x, it leaves no scratch pattern. At all. At first I thought it was just the slurry hazing it up. So I wiped the edge. Still no scratch. I washed it. Still no scratch. This thing is freaking high grit. Oni was right. I'm definitely going to either need to use it with slurry or find a bridge from my 4k king to this. I'm considering the China 12k based on it being cheap, or another Jnat. 330mate sells some fairly cheap ones he rates as 2-2++ grit which I'm thinking may be right between my 4k king and this guy. (Does that sound about right to you guys that know these stones?) I'll probably see if slurry is successful bridging the king and this first though.


edit: finally caught the light and found the scratch pattern. It's about the same as with the slurry, maybe a touch finer.