softest, creamiest synthetic stones

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ethompson

probably up too late sharpening again
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Hi all, bit of an unusual request today... I am looking for stones that are pure butter, mud bathes, etc. The stuff that releases extra grit if you look at it and dishes faster than you want, but cuts well and feels great - stuff like the King 800 or JKI's 1.2k come time mind. Particularly stuff in the 2K+ area. Thicker stones preferred.

Thoughts?
 
I think my Morihei 4k is the muddiest stone I own. That might include naturals as well… Very muddy indeed. NP3K and Aizu are not even close. More in the realm of my shiki uchi. It does not cut as fast as the NP3k but faster than my Shapton 5k and Aizu probably.

I should mention - the Morihei 4k is probably more in line with a NP 3k in terms of fineness.
 
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My JNS synthetic red aoto is soft, muddy, thick, and in the 2k+ area.
 
Can only really comment on King 800 and JKI 1.2 because I own them, but that does accurately describe them. Especially the King and especially when permasoaked. That and my Aoto you tried. I feel like if I look at that thing wrong it starts oozing mud.
 
Here was my summary of the Nanohone 1000 in March of 2021:

The 1000 is surprisingly different from the others in the line. It is very thirsty, makes slurry very readily, and is a delightful playing-in-the-mud experience. I like it a lot. If you were going to buy one Nanohone, I'd suggest this one. Fast, too.

The caveat is that apparently the prior formulation was not remotely like that, and for all I know they have messed with it again since.
 
Also I have to wonder why the JNat dealer doesn't just grab an Aoto and call it a day.
Fair enough. But I’ve got a very specific use in mind here - convexing them and using for ura polishing. I love naturals obviously, but for dealing with a large swath of hardened steel in a progression a synth will be more efficient in the earlier steps of the progression
 
Cerax 320 seems to melt before my eyes.
 
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Thanks all! I’ve got a good working lineup for this up to 1.2k. Really looking for options 2-4k after which I can switch to some naturals I have already shaped for the task
 
Gesshin 600 resinoid. Feels super creamy in use, releases fresh abrasive constantly and also mud, but isn’t sticky like the King 800. More like a well lubricated mud, if that makes sense.

It’s available in double thickness, which makes sense since it dishes faster than I’d like.

edit: not in the 2k range and it’s from the same line as the Gesshin 1.2k which you are familiar with… so probably best to stick with that one
 
I'll second the Gesshin 1200 Resinoid, and the JNS Red Aoto Matukusuyama... Both are creamy, sharpening on a cloud, delightful sorta stones...

To this I would add the Bernal Jinzou Aoto. It doesn't seem quite as fine/consistent as the JNS Red Aoto's I've had (I've seen a bit more streaking with it.), but it's close. Much better price than the JNS stone for people in the US, too. Definitely fits your criteria.

Going finer than that, I have yet to come across a 6K+ synth that I would classify as anything softer than 'Medium', and none are especially thick.

Hope this helps.
 
Ouka is at once creamy and bity, resulting in a superb feedback. It ain't hard. Morihei 4K polishes a good deal higher, and is quite harder, but creamy also defines it rather well, and on the softer side of 4K stones in general. On the harder side of creamy, NP3K comes to mind, but not like the other two - more like slightly glassy and creamy but it's freaking good a feeling for edges it leaves. Except the Ouka - and even it to some extent, but still showing quite a switch in muddiness - all these stones polish more on the mirror-prog kind of thing than hazy, although they can all be used to good effect that way with a more seasoned approach - possibly I'm sounding negative because such care is not how I like things to go, so I eventually mostly discarded working polishes up that way. Ouka is usually as far as I'll go, except perhaps on mono carbon - Morihei 4K not being exactly easy but still straightforard enough and pretty rewarding there. Even so, I'd rather use my old polishing prog and a few dirty tricks to produce similar results. It's like 10-100x faster depending on knives.

Notice that I've kept within the line of synthetic. Which is really all I know.
 
Cerax 320 melts in your mouth, and your hand.

Also this weird ass nakayama
E19CD73D-9617-4D46-A11F-0D1F4BD1A3B9.jpeg
 
I have a SUEHIRO Ouka soaker.
I have tried Morihei and Naniwa - if you want mud by the spades, Ouka is there for you!
Cuts semi fast and leaves a matte polish, not too soft.
 
Super Stone 220 and King 1k come to mind.

In the 2000 range, I would like to add super stone 1000.
Maybe not 100% as soft as the 220, but still very very muddy, dishes fast en has a way higher finish than '1000'
 
Really looking for options 2-4k


This is a bit of a rookie question tbh E Dawg... just get an Ouka / Cerax 3k and fall in love.



(Assuming you’re ok with never being quite satisfied with any other synthetic stone ever again. If you’re not - then by all means get something else. The JNS Red Aoto might be a good option if you’re after: ‘pretty average and wildly overrated, but at least pink is a nice colour’. Or try the Superstone 3k if looking for: ‘absolutely godawful and unbelievably annoying, but at least pink is a nice colour’. ;))
 
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I have an Ouka, but thanks! I was just saying that “rookie” discussions are appreciated, even if the thread is launched by such a knowledgeable member as ethompson. Listening in keeps me from asking questions that would be elementary to many.


Ah I was only just ribbing ET a bit when I said it was 'rookie'. He's answered many far more basic questions of mine regarding jnats &c.!
 
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