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But i will not even use them on knifes !

Here are some videos of good Aoto and bad one.

Bad one: I even soaked that one for 5 min. or more


http://www.youtube.com/watch?v=OrKNMoW21bQ

Good vintage one: without soaking at all

No i did not see them in a wail :(
I try to get some links
I think 30 000 - 40 000 yen is aprox

Tsushima is much finer then Aoto and slower so i will not call it Aoto substitude.
Fragile Tsushimas come from water mountain and not so good for razors they are much cheaper too and way to soft !...