Japanese craftsman making O-scale brass trains

Well, that's interesting.  I had remembered for my time in Japan -- admittedly fifty + years ago -- that OJ meant using 0 ga track to represent 42" gauge track, resulting in 'larger than 0' models.  I see now it's being used to mean  1/45 models on a 24 mm track ga [ 24 x 45 = 42"ga ];  did it change over the years, or did I just misremember it ? [ My wife would vote for the latter....]  I could see the 1/45 if one were doing a lot of Japanese standard ga models, but he seems to concentrate on classic JNR.  Perhaps his customers display / operate them alongside European prototypes, which are popular in Japan ??

Best regards, SZ

Very impressive!  Modern technology, computers, high tech machines are impressive, but seeing his ability range from making manual blue prints, use old mechanical/manual machinery and to be so precise in such small parts is amazing craftsmanship.

Thanks for sharing!

Outstanding! Thanks for sharing.