Thread: Jnat prep?

I was offered a good deal on a jnat and so, of course, it is on the way. (I don't know if he's on this forum, but thank you!)

It needs lapping so I will be getting right on that. Am I correct that the jnat requires a more polished face than the synthetic stones I am used to? It is my understanding the standard 325 lap would leave the surface too rough. Is 600 fine enough or should I go higher?

I have no info on the stone.

I'd go with the 325 and then rub it with a tomo nagura for final polish.
I see it's not all flat, that how i would leave it, as long as I'm not honing anything that need the hone to be flat all the way to the side, it will be all flat with time, no use to waist good stone.

"Am I correct that the jnat requires a more polished face than the synthetic stones I am used to?" I'm not sure about "more polished" but they usually are denser than synthetics.

Thanks Lemur.

I was digging around online and it's identical to a couple of Narutaki Asagi I found. Same color, same bark, same size. I know this means nothing, but I can always hope.

I'd lap it out to the right hand edge if it were me. Actually, if it were me I'd lap it entirely flat, but that is me. At the very least have it flat to the right edge and don't worry so much about the left hand side.

I've lapped my Jnats with a 400 grit diamond plate and the surface was fine. I've never heard the Jnats need a more polished surface than any other kind of hone, though most often people get Jnat finishers which I suppose means the surface is smoother than say a bevel setter.

James.

Okay, I'm getting progressively happier as I work with this. I thought it was going to be a stinker.

The low areas were only .5 mm down, so I was able to lap it flat on DMT within a few minutes. It was flat but hazy, I used some 400 wd paper on granite and lapped it further to a slightly reflective surface. It absolutely ate the wd paper up. It did give me a noticeably smoother surface.

I took one of my razors in progress and ran light circles on plain water for a few. It turned the water grey with steel in a minute, it's fairly fast. Looking at the edge, scratches look a bit finer than my Nani SS 8k.

I like it, it's getting a nice box.

Now try it with some slurry!
... and make sure to work it!

Yellowish green when wet.