Seki once held more than three hundred swordsmiths within a single river valley. The town's advantage was geological, not sentimental. Clay for forge linings, charcoal from the surrounding pine hills, and the clean water of the Nagara and Tsubo rivers gave smiths everything a forge demands. Smiths began arriving in the Kamakura period. By the Muromachi era, Seki blades were sold across the archipelago under a plain reputation: they did not bend, they did not break, and they cut well. The name most often repeated is Motoshige, who settled here in the early fourteenth century and whose lineage shaped the Mino tradition. Mino became one of the Gokaden, the five great schools of Japanese swordmaking, alongside Yamashiro, Yamato, Bizen and Soshu. Its signature was practicality. Mino blades favoured a sanbonsugi hamon, a temper line of three repeating peaks, produced by uneven clay application before the quench. The pattern is easy to identify and difficult to execute. Collectors still read it as a Seki signature. The sword ban of 1876 could have ended the craft. It did not. Smiths turned to razors, scissors, pocket knives and, later, surgical instruments. Today roughly half of Japan's cutlery output originates in this city of fifty thousand, and a japanese knife making workshop here sits inside a working industrial district rather than a heritage set piece. Family workshops occupy sheds behind houses. Grinding wheels run past dusk. The Seki Traditional Sword Smith Museum at 9-1 Minamikasuga-cho anchors the story. Admission is 300 JPY per adult. The building holds tamahagane ingots, tatara-smelted steel, forging hammers, and a demonstration floor where licensed smiths work the hearth in front of visitors. Doors open at 09:00 and close at 16:30, Wednesday through Monday; Tuesday is closed. Displays trace the full sequence — smelting, folding, forge welding, clay coating, quenching, and the long polish that follows. Beyond the museum, the town's living trade is what draws makers. Damascus billets are layered here in counts of thirty-three, sixty-seven and higher, each fold visible as a wave after etching. Mitsuboshi and its neighbours run production lines where blanks are stamped, hardened in salt baths, and hand-finished on water stones. Modern Seki chef knives — gyuto, santoku, petty — carry the same hardness logic as the swords, tuned for kitchens rather than battlefields. This explains why japanese knife making workshop tours in Seki differ from novelty forging classes elsewhere. The instructors are working craftsmen. The steel is real tamahagane or genuine Damascus stock. Nothing is simulated. Every October the Seki Cutlery Festival fills the main street, but the forges operate year-round, indifferent to seasons. The city keeps making edges because it never stopped.