Edo-Period Swordsmithing Techniques

Timeline

1. 1603–1620Edo · Kantō RegionThe Tokugawa shogunate issued sword-confiscation edicts to seize civilian weapons, stipulating that swords must be forged by licensed smiths with inscribed signatures; the shogunate controlled sword production and circulation through the Go-kaden system of smiths from Yamashiro, Settsu, Kawachi, Izumi, and Settsu.
2. 1620–1670Seki, Mino Province · Gifu PrefectureWith wartime demand for swords declining in peacetime, Bizen and Mino school smiths focused on the aesthetic expression of forging patterns (jihada, ha-mon); techniques like surikaeshi-tetsu and hako-tetsu were perfected, blade forms became more uniform, and ornamentation increased.
3. 1670–1736Osaka · Kinki RegionThe rise of Genroku culture promoted sword-connoisseurship trends; smiths collaborated with scabbard makers and tsuba makers to elevate the art of sword mounting, and Hon'ami Kōetsu and others compiled sword-appraisal works that laid the foundation for later sword scholarship, with distinct stylistic differentiation among New Sword period schools.
4. 1876Swordsmith workshops across Japan · JapanAfter the Meiji sword-abolition edict, sword forging declined for a time; since the 20th century it has revived as a traditional craft, with modern smiths continuing Edo-period techniques to produce art swords, and in 1958 Japanese sword-forging techniques were designated an Important Intangible Cultural Property.