In Japanese swordmaking, the metal collar or ring at the base of a sword handle where it meets the blade guard.
Japanese word from 布知 or similar, referring to a specific component of Japanese sword (katana) construction. Adopted directly into English for precision in martial arts and blade terminology.
In katana swords, the fuchi is a tiny detail that shows master craftsmanship—it's where different materials and textures meet, and samurai could identify a blade's maker partly by this small ring. Every part of a sword had meaning.
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