Thread: Where would Coticule fit in Asano Nagura progression

I realize that the JNat slurry stones are flakes and the Coticule cuts with garnets in the slurry. But, where would the Coticule fit in an Asano Nagura progression? From my magnification analysis the general results of my Tomo Nagura and my Coticule are similar although the Tomo gives me a more refined edge on my Shuobudani. The Coticule slurry seems to cut faster. Does anyone think the Coticule slurry is incompatible with a JNat? Am I committing sacrilege?

Sacrilege? No, theyre your stones and do what you wish with them. I never tried it but have heard some that have with mixed results, only one way to find out though.

Never.
Coticules have have nothing in common with Jnats

Let me think.....

I can remove microchips & set a bevel using coticule slurry on a fast Jnat. It's 2x as slow as a synthetic 1k but I don't own a coticule fine enough to match a tomo for an uber fine Jnat. I do own a coticule that approximates a 12 k synthetic edge but my Jnats go beyond that.

I would think they are a bit coarser than the asano naguras, but not very far behind. As for thinning the slurry, I suspect that the base stone plays a big part in refining the edge. If you use an Asano on a fine British slate, and shave, the results are much worse than if you use it on a very fine Jnat.

They cut different, and I have yet to find a coticule that was a lot like another coticule (I've only tried a half dozen, though). I'd think that the coti on slurry could substitute for a japanese pre-finisher since it doesn't leave deep grooves, but I don't think I'd want to mix it high up in any progression of finish steps if you were using a japanese stone and thinning tomonagura slurry to finish. Just my opinion.

The treat with coticules, to me, is to match them with a vintage linen where their smoothness is left intact, but the vintage linen steps the edge up in sharpness like a coti usually needs. Totally different flavor than japanese finishing if you avoid the pastes and powders after the last stone.

I just re-read the title, having agreed with most everyone's point of view, that it is sort of 'water & oil', (don't mix) but I haven't had a lot of experience with J-nats. Just one extremely good Nakayama Asagi that I sold fairly soon after I bought it lest I succumb to the J-nat virus, "lakamuny". I hear it is extremely contagious.

Anyway, re-reading the title of the thread, the first thought that popped into my mind was if I had finished a razor on a J-nat, or a synthetic, and it was "too sharp/harsh" a few strokes on a fine coticule would probably set it right. Unlikely to end up harsh off of a J-nat but just thinking out loud here.

Originally Posted by JimmyHAD

I just re-read the title, having agreed with most everyone's point of view, that it is sort of 'water & oil', (don't mix) but I haven't had a lot of experience with J-nats. Just one extremely good Nakayama Asagi that I sold fairly soon after I bought it lest I succumb to the J-nat virus, "lakamuny". I hear it is extremely contagious.

Anyway, re-reading the title of the thread, the first thought that popped into my mind was if I had finished a razor on a J-nat, or a synthetic, and it was "too sharp/harsh" a few strokes on a fine coticule would probably set it right. Unlikely to end up harsh off of a J-nat but just thinking out loud here.

Yes totally agree. This is where cotis come into their own. 5-10 strokes on my lv will calm a crispy edge and add in smoothness, not to many strokes to significantly lose any keenness either.