The Boso Peninsula, a source of iron sand, has been a center of iron production and blacksmithing since ancient times. During the Edo period, large-scale river construction and land reclamation projects, as well as livestock farming including dairy farming and the raising of warhorses, flourished, leading to the development of necessary craftsmanship tools. After the Meiji Restoration, the range of tools produced expanded, and the region became known throughout Japan as a center for craftsmanship tools.

• Technology/techniques/raw materials

  Technology/techniques/raw materials

  Technology/techniques

  1. Molding shall be carried out by one of the following methods:
  (1) In the case of scissors, the blades shall be "aligned" using a hammer or file.
  (2) For products other than scissors, the process shall be carried out by "hammering" or "cutting" using a hammer or chisel.

   

  2. When performing heat treatment, rapidly cool with water or oil.

   

  3. When tempering, cool with water or oil.

   

  4. "Removing distortion," "sharpening," and "finishing" must be done by hand.

   

   

  raw materials

  The materials used must be iron, carbon steel, or iron and carbon steel, or a metal with equivalent properties.