A working forge on the Shimanto river in Tosa blade country, where you forge, grind and harden your own blade in the quench — the part most places keep for themselves.
Japan’s great knife towns grew out of tobacco and lost swords. The Portuguese brought tobacco to Japan in the mid-sixteenth century, and in the latter half of that century the smiths of Sakai began forging small knives to cut the leaf. The Tokugawa shogunate later granted their blades an official mark of quality. In the mid-Edo period the deba appeared, and many other cooks’ knives followed. Then on 28 March 1876 the Haitōrei edict banned most people from carrying swords in public, and many swordsmiths turned to kitchen cutlery to survive. Today the craft is most alive in Sakai, whose forged blades, Japan’s crafts association says, are most of the knives Japanese professional chefs use, and in Tosa, where a land survey of 1590 already counted 399 blacksmiths and the forges still work.
Learn to forge, grind and harden your own blade in the quench, at a working forge on the Shimanto river.
Living sceneNamed mastersVerified schoolsTakes students directlyTaught in EnglishNobuya Hayashi's working forge on the Shimanto river in Tosa blade country, run in English by Hayashi himself with no interpreter. On the one-day course you forge, grind and harden your own blade in the quench and the school sharpens it afterwards and posts it to you — their own FAQ says the knife is not finished by the end of the day; the six-day course starts further back, smelting your own steel from iron-sand. ⚠ A guided day, not an apprenticeship — the master keeps the most dangerous stages and puts the final whetstone edge on, and the one-day uses modern knife steel. ¥44,000 for the one day in 2026, ¥48,000 for 2027 dates; the six-day tamahagane course ¥330,000–440,000 depending on the date, from their own booking page. Checked on workshop-kurogane.com, 17 August 2026.
Facts read on the school's own pages, 7 Oct 2026.
There is a real difference between a school that teaches you and a good-looking website, and too much of the internet is the second kind. Four instruments do the work, and every one of them is visible on the page you are already on.
If a place dodges these, that's your answer. It costs you nothing to ask, and it tells you everything.
This is the short version. The full method is here — the six questions, in order, for any craft anywhere.