At Nara we visited the Yakushi-ji Temple (national treasure) guided by Prof. Shigeatsu Shimizu and had a peek at the restoration site of the east pagoda from 730 A.D. (its twin is visible on the left side of the image).
Afterwards we visited a carpentry specialized in sliding doors.
Mechanism with a hidden spring which holds the vertically sliding element in its place.
Wooden joints 1
Wooden joints 2
Trying tools ourselves.
Later in the day we were meeting up with a colleague from Kyoto Institute of Technology.