The Hatsukokoro HAP40 Bunka 180mm is a compact, versatile knife built for precision work and long-lasting edge performance. We’ve long referred to HAP40 as “Voodoo Steel” because it holds an edge significantly longer than most steels while still being relatively easy to sharpen. With its high hardness and fine grain structure, it delivers excellent cutting feel, edge stability, and durability for everyday use.
The bunka profile offers a flat edge for push cutting along with a pointed tip for detail work, making it a great all-around option in a slightly shorter length. The blade features a clean kasumi finish with stainless cladding for easier maintenance, and a well-balanced grind that combines thin cutting ability with strength. A one-piece octagonal ebony handle completes the knife with a refined look and comfortable grip.
Care Instructions: Hand wash and dry after use. Do not put in the dishwasher. Use a soft cutting board and avoid bones, frozen foods, and hard surfaces to prevent chipping. Although semi-stainless, dry promptly after use to maintain the edge and finish.
Brand: Hatsukokoro Location: Tosa, Japan Construction: San Mai Edge Steel: HAP40 Semi Stainless Steel Cladding: Stainless Steel Finish: Kasumi Edge Grind: Even HRC: 65-66 Weight: 4.7 oz (134 g) Edge Length: 180 mm Total Length: 318 mm Spine Thickness at Heel: 2 mm Blade Height: 48 mm Handle: Octagonal Ebony
The bunka profile offers a flat edge for push cutting along with a pointed tip for detail work, making it a great all-around option in a slightly shorter length. The blade features a clean kasumi finish with stainless cladding for easier maintenance, and a well-balanced grind that combines thin cutting ability with strength. A one-piece octagonal ebony handle completes the knife with a refined look and comfortable grip.
Care Instructions: Hand wash and dry after use. Do not put in the dishwasher. Use a soft cutting board and avoid bones, frozen foods, and hard surfaces to prevent chipping. Although semi-stainless, dry promptly after use to maintain the edge and finish.











