How is the blue and red tsuka ito wrap constructed?
Updated Mar 2026
The tsuka ito wrap on these katana follows the traditional hishigumi diamond-weave method, in which cord is interlaced over a same-kawa ray skin base in a repeating geometric pattern. This technique creates the characteristic raised diamond shapes along the length of the handle and provides a structured, layered texture. When executed in blue and red tones - whether alternating colors or a gradient blend - the wrap produces a handle that reads differently depending on the viewing angle and light source. The same-kawa ray skin underneath adds a pebbly tactile foundation that both secures the cord and contributes to the grip's overall visual depth.