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Rockstead manufactures precision folding knives and fixed blades in Sakai, Japan, the Osaka-area city that has ground blades for centuries. The brand grew out of Ishida Industrial, a company founded in 1931, whose late-1990s collaboration with master gunsmith Kitano Katsumi produced the first Rockstead knives in 2000. Today an eight-person staff produces about 800 knives annually, combining NC machining centers with hand polishing and assembly, and stands behind them with a lifetime warranty that famously covers the sharpness itself: if your Rockstead stops cutting well, they will make it right. We carry Rockstead folders in framelock and liner lock mechanisms, led by the iconic HIGO, alongside fixed blade models including the UN, DON, RITSU, and KON.
Rockstead uses two blade steels from Hitachi Metals: ZDP189 powder stainless hardened to an extraordinary HRc67, run as a single steel or clad with VG-10 outer layers over a ZDP189 core, and YXR7 matrix high-speed tool steel at HRc65, tough enough to cut dried bamboo without edge damage. YXR7 blades receive a DLC coating applied at 500 degrees Celsius, 3 microns thick at Hv1800 surface hardness, bonded in a vacuum oven where the base steel's hardness prevents the coating from fracturing under impact. Where these chemistries sit at the absolute ceiling of production steel is covered in our knife steel guide.
Rockstead produces blades in two geometries drawn from the Japanese sword. Honzukuri blades feature dual convex surfaces, providing edge strength with cutting ability, while Shinogizukuri blades use two-plane construction with a shinogi line where the surfaces meet. Edge angles graduate from 30 degrees near the handle for impact resistance to 24 degrees near the tip for maximum sharpness, connected by one continuous reducing angle, the result of Rockstead's own research into edge geometry and cutting performance.
Every blade passes through sequential whetstone polishing at 400, 800, 1200, and 2000 grit, and any scratch sends the blade back to the previous stage. After whetstone grinding comes SMAP processing, buffing, and finishing on Rockstead's proprietary Super-finisher machines. The mirror extends to the edge itself, eliminating the microscopic serrations visible under magnification on conventionally finished blades, which is why a Rockstead edge resists nicking: there are no random protrusions left to fail.
Folder lock bars are machined from SKD11 tool steel at HRc61, under handles spanning hardened anodized aluminum, titanium with DLC and DLC-Prism coatings, carbon fiber, and ebonite, with models like the SHU wearing etched Japanese apricot and koi motifs. Fixed blades include the silk-wrapped UN, wooden DON and KON, and micarta RITSU. Each knife arrives in a wooden presentation box with a serialized certificate documenting its steel hardness test results, because at this level, the paperwork is part of the knife. Nothing else in production cutlery cuts like a Rockstead, and nothing else is finished like one.
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