I read an article on the Eastern Smooth web site that I understood to say that the author used a single finishing/polishing stone and different Nagura stones in the finishing process. For those of you who may have read the same article, did I understand it correctly? Have any of you used that technique? As for example using a 12000 grit Chinese stone with progressively finer Nagura stones? If you have, what's the verdict? Also, the article refers to a barbering manual of 1964 by Kousuke Iwasaki. I've looked on the Internet but I can't find it. Any of you know if it is available in English?