Keywords
Architecture
Tools
A strike-through chisel. Normally, when constructing a pass-through mortise, the timber is carved away from both sides with a striking chisel *tatakinomi 叩鑿. However, when the carpenter has nearly reached the middle of the hole, he uses the uchidashinomi to cut away remaining wood. The head of the chisel is about 12 mm wide and 6 mm thick, and there is no cutting bevel. The structure of the uchidashinomi is the same as that of the striking chisel tatakinomi.