Ryuhyo Rainbow R2/SG2 Damascus Bunka 170mm (Blade Only)
The Workshop (Knife Builder)
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SPECIFICATIONS
Knife Style: Bunka
Steel Type: Stainless Steel
Blade Material: R2 (SG2)
Blade Finish: Rainbow Damascus
Blade Hardness: 63HRC (+/-1)
Bevel: Double
Handle: None ➛ Choose yours
Blade Length: 170mm
Heel Height: 48mm
Spine Thickness: 1.5mm
Weight: 80g
The first thing you'll notice is the explosion of color. As light dances across the blade, vivid reflections burst from brilliant gold and fiery pink to electric blue, emerald green, and deep violet. The effect is bold, luxurious, and constantly changing—an unmistakable statement piece that looks different from every angle. It's one of those finishes that immediately stops people in their tracks.
Another beautiful creation from Hatsukokoro, this knife is part of a collaborative project that brings together some of Japan's most talented blacksmiths, sharpeners, and craftsmen. By partnering with renowned artisans across the country, Hatsukokoro consistently delivers knives with exceptional fit and finish, outstanding cutting performance, and remarkable value. While unquestionably a premium knife, the level of craftsmanship and refinement often rivals pieces costing significantly more.
Handcrafted in Echizen, this 170mm Bunka features an exclusive rainbow finish layered over a flowing Damascus pattern, giving the blade incredible depth beneath its vibrant colors. Every movement catches the light differently, revealing dramatic shifts between warm and cool tones that make the knife feel almost alive. It's a finish that confidently blends modern luxury with traditional Japanese craftsmanship.
Performance is every bit as impressive as its appearance. At its core lies premium SG2 (R2) powdered stainless steel, hardened to approximately 63 HRC for exceptional edge retention and long-lasting cutting performance. The grind is unmistakably that of a true laser: incredibly thin behind the edge, effortless through ingredients, and designed to glide with minimal resistance while delivering outstanding precision.
At 170mm, the Bunka is one of the most versatile profiles available. Compact, agile, and incredibly easy to maneuver, it excels at everything from vegetables and herbs to boneless proteins and detailed prep work. Its characteristic reverse tanto tip offers exceptional precision for intricate cuts, while the taller blade provides generous knuckle clearance and plenty of surface area for transferring ingredients from the board.
This is a knife that refuses to blend in. It combines the effortless cutting performance of a premium SG2 laser with one of the most striking finishes you'll find on any Japanese knife. Equal parts performance tool and functional work of art, it's made for those who appreciate exceptional craftsmanship and aren't afraid to own something truly unforgettable.
Kakushin can handle the blade-to-handle assembly for you at our shop. If you're new to the custom knife world and want to confirm the fit and sizing of a handle with a specific blade, feel free to reach out!
