The iaitō (居合刀)
is a modern metal practice sword, without a cutting edge, used primarily for practicing iaido, a form of Japanese swordsmanship.
Iaitō
Japanese girl practicing iaido. The iaitō shown in this photograph was custom made according to the weight and size of the student. The blade is made of aluminum alloy, and for the student's safety, lacks a sharp edge.
A Japanese sword is one of several types of traditionally made swords from Japan. Bronze swords were made as early as the Yayoi period, though most people generally refer to the curved blades made from the Heian period (794–1185) to the present day when speaking of "Japanese swords". There are many types of Japanese swords that differ by size, shape, field of application and method of manufacture. Some of the more commonly known types of Japanese swords are the uchigatana, tachi, ōdachi, wakizashi, and tantō.
Japanese swords. Two tachi with full mountings (middle and bottom right), a sword with a Shirasaya-style tsuka (top right), a wakizashi (top left), and various tsuba (bottom left).
A range of Japanese blade types, from left to right: naginata, ken, tantō, katana (uchigatana) and tachi (not to scale).
Tachi. The blade was made by Masatsune. Blade, 12th century; mounting, 18th century. Tokyo National Museum
A katana forged by Hizen Tadayoshi I. (Saijo Ō Wazamono) Azuchi–Momoyama period. (top) Katana mounting, Late Edo period. (bottom)