I am back.
I had no internet connection and have been toooooooooooo busy visiting blacksmith etc. that I could not answer e-mails.
I will catch up soon so please be patient.
Here is the list of places I visited:
Day one (14th) Yoshikane Hamono Seisakujyo, Wakui Ba-ru Hamono Seisakujyo (Wakui crowbar and cutlery workshop, I do not know the official English translation), Honshin (saya craftsman Mr.Honda), Sanjyo Kaji Doujyou (I do not know the official English translation) http://www.ginzado.ne.jp/~avec/kajidojyo/index.html, Sanjyou-shi Rekishi Minzoku Shiryoukan (a small Museum about Sanjyo history culture. I do not know the official English translation) http://www.city.sanjo.niigata.jp/rekimin/ and Sanjyo Shiritu Toshokan (Library of Sanjyo City, I do not know the official English translation) http://lib.city.sanjo.niigata.jp/ .
Day two (15th) Shigefusa Hamono, Sanjyou Seisakujyo (Iwasaki) and another blacksmith. I had long and intensive conversation with Iizuka-san and Iwasaki-san. So not so many visits.
Drove to Yahiko Onsen (hot spa) to relax.
Day three (16th) Yahiko Shrine (got purified at the shrine by the priest) , drove back to Tokyo.
Data of the trip: about 670km, fee for highway to Sanjyo on weekday 5,300Yen, back to Tokyo on Saturday 1400Yen, gasoline about 55liter (my car is not an ECO car)
I hope that you see how busy I have been and excuse me not no answer e-mails.