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“A lacquered saya is as much a precision component of your katana as the blade itself. When new, that glossy, perfectly finished sheath often grips the nakago so snugly that unsheathing feels like pulling teeth. A proper fit should hold the blade securely—no slipping out when you lift it vertically—yet allow a smooth, even draw, with only a gentle ‘pop’ and no harsh jerking or binding.

New sheaths can be tight thanks to layers of lacquer build‑up, wood swelling from humidity, or intentional precision tuning by the smith. You might feel the blade sticking at the mouth, binding mid‑way down, or even hear a faint crunch as metal scrapes lacquer. These signs aren’t defects but invitations to break in your saya carefully: gently swab the interior with a lint‑free cloth, apply a whisper of camellia oil at the koiguchi, and perform controlled draw‑and‑re‑sheath repetitions until the resistance feels uniform.

Patience and proper technique transform that initial friction into a reliable, lasting fit—one that protects your blade, enhances the draw, and honors the craft behind every American‑made katana.”