Chisel - Chisel

Japanese: のみ(鑿) - のみ

It is a general term for tools used to bore holes in wood or stone or to scrape the surface of materials, but the one used by metalworkers and stonemasons is called a chisel (see image). Along with axes, chisels are one of the oldest tools used, and chisel-shaped stone tools were used to make things like dugout boats during the Jomon period, and they were quickly replaced by iron tools during the Yayoi period. Chisels consist of a blade and a handle, but both parts of a chisel are one piece made of iron. This is called a common handle. All blades for woodworking are single-edged, but chisels are double-edged. The blade is inserted into the handle, but hammering chisels used for hammering have a crown (iron ring) attached to the end of the handle and a ferrule fitted into the handle.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

木材や石材などに穴をうがち，また材面を削ったりする工具の総称だが，金工や石工で用いるものは鏨（たがね）という(図)。鑿は斧とともにもっとも古くから用いられた工具で，縄文時代のくり舟などの工作には鑿状石器が使われ，弥生時代にはいち早く鉄器化した。　刃部と柄部からなるが，鏨は両部とも鉄で一体である。これを共柄という。刃は木工用のものはすべて片刃であるが，鏨は両刃である。刃は柄に対して込差し（こみざし）されるが，槌打ち用の叩（たたき）鑿は柄尻に冠(鉄環)をはめ，込みの部分には口金をはめる。

出典　株式会社平凡社世界大百科事典第２版について　情報

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