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+1 on the Shoubudani!

They are usually great stones, I would say they are as good as the Nakayamas but for a better price, tho all prices on all jnats are going thru the roof right now.
Some...

"Shohonzan Awasedo" is something like True Mountain Sharpening stone/finishing stone.

Yup, Wa powders are either powdered jnat or some synthetic, the synthetic is usually crap.
It's not very good at removing metal so I start off with wet n dry and finish off with nugui powder.
I use...

Fikira, If you want to experiment with powdered jnats for polishing, check out "nugui" powders.
They are mainly for swords but fun to polish anything with.
It's made up from jnat powders, iron...

That was a beauty, you know what it is?

+1 on Mainaman, ere you sure about the name?
Looks like a nice rock anyway!

See, you're getting there! :)
How does your new tomo naguras work for you?
I see they got some skin, make sure that skin stay well away from the hone when making slurry, it can be toxic!

As with Mikawa Naguras with different "grits" you can use different Tomo naguras too, it's not only the "grits", some will lubricate better than others.
It takes a few to find a good combination,...

As Jnats go, ymmw!
But the Shoubudani I've got here is not very comfortable with water only, blade skips and it scratches badly, so for me on this rock it's slurry only!
Then there is lots of...

I sometimes take a little slurry on the palm of my hand and stop on it, it works fine to take a harsh edge to the more smooth I like.
As much as i like slurry, now it's time for some Cognac and a...

I sure would if I had any, I don't even know if there is any "real" recepies.
I mix up a small test batch, add different abrasives while testing on the steel I want to polish and try to keep track...

I do that all the time got lots of small containers with powdered jnat for mixing Uchigo or the name I use Nugui powder.
In some I add iron oxide black or red, crox, some with water some with oil......

I've got a 1,6 Kg Uchigomori that's being in the process of becoming finger stones on my kitchen floor right now.

Some more smaller razor stones...

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Corner cut to make tomonaguras, there is usually some corner that is bad anyway.

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Nakayama something something...
Perhaps someone can read this kanji, it's a very nice stone, smooth as butter and a good prepolisher!

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Got an Otaniyama the other day.
I've got Nakayamas, Ozukus, Coticules, Thuringens and some more, this one beats them all!
Does anyone now anything more about it?