Thread: J-Nat club

Thanks again SharpMan for some good information...

Since I bought this stone second hand as I mentioned, from someone else who may also have bought it second hand and knew little about the stone except that it had some Japanese symbols stamped on the end, I did end up visiting 330Mate (based on your observation). However, since the website is in Japanese I found it of little value to me... At least I know the stone came from Japan; it is a natural stone; it is very fine and hard; it works great and puts a very keen edge on a blade; and now that 'maybe it is from a strata called Namito', which is an indication of possible origin.

Thanks again for your forbearance...

Wolfpack34 no need for apologies at all your question is very common. It is answer that i think was wrong.
I have seen some Tenjyou stones that was harder then Aisa or Namito and other way around, thats why i think it will be confusing for some to say that all Namito layer is harder then other layer ! To rait fines i aslo think is very unnecessary cose it is proved that all Jnats are same fines, only hardnes can vary

Here is my new JNAT. It's my first, and I am quite obsessed already. It's an Ozuku Asagi with Range, straight from Maxim earlier this week. I gave it a quick test run with my "test" razor on light slurry with the tomonagura and finished on water. I can tell I am entering a new world with this stone. Not that I have anything against my coticules; this is just a different animal altogether. Visually the edge when viewed under the loupe was much more polished than I have been able to achieve with my coticules. The edge was very comfortable and, although only marginally keener than what I have achieved with my coticule, I can tell this stone has a lot of unlocked potential. I can't wait to see what it yields with more than a cursory session.

I sealed the back and sides with polycrylic gloss, lapped it with my "chisel-mellowed" DMT 325 -> BBW -> tomonagura, and chamfered the sides.

Now it's ready for a real session.

Here are a few pics:

Before:


After:

Originally Posted by maxim207

thats why i think it will be confusing for some to say that all Namito layer is harder then other layer ! To rait fines i aslo think is very unnecessary cose it is proved that all Jnats are same fines, only hardnes can vary

Hello Maxim
I found this interesting, can you elaborate? And I am curious about your proof that all are the same fineness. with regards, Alx

Originally Posted by alx

Hello Maxim
I found this interesting, can you elaborate? And I am curious about your proof that all are the same fineness. with regards, Alx

Alex, not maxim, but I think Maxim means that the abrasive in jnats is the same size, but the hardness
determines how fine the end result is. Like with arkansas stones, the abrasive is the same
size for all of them, but the hardest arkansas stones give the best finish.

Sharpman

Originally Posted by SharpMan

Alex, not maxim, but I think Maxim means that the abrasive in jnats is the same size, but the hardness
determines how fine the end result is. Like with arkansas stones, the abrasive is the same
size for all of them, but the hardest arkansas stones give the best finish.

Sharpman

It seems a bit of a generalisation tho. A very hard stone can still leave a scratchy finish.

Originally Posted by maxim207

To rait fines i aslo think is very unnecessary cose it is proved that all Jnats are same fines, only hardnes can vary

I would like to see some of this proof?

I think that JimRs article have bin there for a long time i link it again
How's it Going? | Eastern Smooth: The Blog

According to a study done by Tokyo University in 1982, as quoted in "The Charm of Kyoto's Natural Hones," the main abrasive in Kyoto finishing hones are particles of Silica, ranging from 2-3 microns in size. 2-3. That's the size of the particles in a 4K to 6K artificial stone. ALL of the stones they measured fell between those marks, from a variety of mountains and strata.

and here is one of many Ozuku from Tenjyou strata that is a lot harder and "finer" then many Namito and Aisa stones i have tried