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yes if it is possible , which I doubt, the
HADs here will buy it.

No I do not

I have had only 16k Shapton, and yes there is huge difference.

As far as 30k Shapton I have not tried it, the person that I talked to deals with stones long enough to know what a...

You need to try a good Japanese finisher to understand the difference.
I bet there are even finer ones than what I have.
When I talked to So about grit comparison with Shapton 30k , he said that a...

So at japantool is the person to talk to about Japanese finishers, he has thousands of stones and will find you a nice razor finisher that will be guaranteed (and can be returned if not what you...

I do not think that is true. I have Asagi that is fine enough to skip the CrO strop, the edge off it is just amazing.

I guess for synthetic would be 12k Naniwa Super Stone, Shapton Glass 16k or 30k. Then if you want to go into naturals, a high quality Nakayama. I have not used other naturals so I can't comment on...