How do I maintain a functional samurai sword after cutting practice?
Updated Feb 2026
After each cutting session, clean the blade immediately. Wipe off any residue from the cutting target using a dry cloth, then apply a fresh coat of choji oil to the entire blade surface. Inspect the edge for any chips or flat spots — minor imperfections can be addressed with a fine-grit whetstone, while significant damage should go to a professional polisher. Check the mekugi pin and handle tightness after every session, as the forces from cutting can gradually loosen the assembly. Re-tighten the handle wrapping if it shows any slack. Store the blade in its saya between sessions and keep it oiled. A well-maintained functional katana will last through years of regular cutting practice.