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How to Clean a Japanese Katana and Saya (Sheath) - Dengarden
How to make a sword Shirasaya?
500 years old Muromachi Katana | Samurai Museum Shop
Building Your Own Custom Koshirae and Samurai Daisho « Unique Japan
Japanese swordsmithing | Military Wiki | Fandom
Why do Samurai sheath their Katana edge side up? Wouldn't an edge side down allow for a one-motion attack with a diagonal slashing up motion from unsheathing the blade? - Quora
Japanese Sword Scabbard : 5 Steps (with Pictures) - Instructables
Japanese Sword Restoration Parts - Saya (Scabbards)
Katana Parts and Components - Medieval Swords World