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Home | Japanese Kitchen Knives | Hado Sumi B1D 180mm Bunka Aogami 1 Carbon Damascus Clad Urushi Sakura

Hado Sumi B1D 180mm Bunka Aogami 1 Carbon Damascus Clad Urushi Sakura

£513.07
£513.07
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READ IMPORTANT DELIVERY OPTION INFORMATION

Blade is hand forged aogami #1 with a non-stainless suminagashi cladding. Handle is octagonal cherry with sections of natural cherry bark remaining sealed with an urushi lacquer coating.

The Hado ‘Sumi B1D’ aogami 1 series double bevel knives are forged at Tanaka Hamono, led by Yoshikazu Tanaka a top level ‘Dentokougeshi’ blacksmith in Sakai City, Osaka. Tanaka Hamono's treatment of aogami 1 is very highly regarded, he manages to incorporate both toughness, ease of sharpening with excellent edge formation with long edge life. They are ground with flat even kireba and a polished spine and heel and will be easy to follow up thinning and are a delight to maintain.

Everyday Prep

Good for veggies and boneless protein

Avoid Bones & Dense Foods

If you can't bite it, don't cut it.

Iron Clad Carbon

Reactive core steel between two reactive layers.

Thin Grind

Particularly thin grind. Use with intention.

Ambidextrous

Suitable for all users.

Bunka

A bunka is a Japanese multipurpose kitchen knife known for its angular kiritsuke-style tip. Its flat edge profile excels at push-cutting and chopping, while the sharp, pointed tip provides precision for detail work and piercing tasks. Versatile and agile, the bunka covers everyday prep from vegetables to proteins with a bit more tip control than a standard santoku.

Listed Length: 180mm
Total Length: 322mm
Edge Length: 170mm
Heel Height: 53mm
Spine Thickness: 2.9mm
Weight:
Orientation: Ambidextrous

Blade Type: Stainless Clad Carbon Steel
Steel Type: Aogami 1 (Blue Paper #1)
Steel Hardness (HRC):
Maintenance: More Attention
Handle Type: Japanese (wa)
Handle Material: Urushi Sakura

  • This is a stainless clad carbon steel knife made from thin, hard steel
  • Hand wash and towel dry after use. Do not air dry or place in the dishwasher.
  • Expect oxidation (color change, staining, spotting) with use.
  • Prolonged exposure to moisture or food debris will cause rust; remove any rust with a light abrasive.
  • The carbon steel edge will oxidize with use and may rust if left wet. The stainless clad outer layers resist corrosion but can still stain with prolonged moisture exposure.
  • Avoid twisting, scraping, or use on dense or hard foods and surfaces to avoid early dulling and edge damage. If you wouldn't bite into it, don't cut it with this knife.
  • Use on wooden cutting boards only. Do not use bamboo, plastic, stone or metal cutting surfaces.

Dive Deeper

Fine - Japanese Double Bevel

Sharpening Supplies

Stones & Accessories selected specifically for this knife.

Bernal Cutlery Takarazukushi 500 Grit Soft & Fast Ceramic Japanese Whetstone

Bernal Cutlery Takarazukushi 500 Grit Soft & Fast Ceramic Japanese Whetstone

£34.61
£34.61
Bernal Cutlery Takarazukushi 4000 Grit Yellow Semi-Hard Resinoid Japanese Whetstone

Bernal Cutlery Takarazukushi 4000 Grit Yellow Semi-Hard Resinoid Japanese Whetstone

£61.69
£61.69
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Bernal Cutlery Takarazukushi 1200 Grit Blue Marble Semi-Soft Ceramic Japanese Whetstone

Bernal Cutlery Takarazukushi 1200 Grit Blue Marble Semi-Soft Ceramic Japanese Whetstone

£55.67
£55.67
Naniwa Chosera Pro 800 Whetstone

Naniwa Chosera Pro 800 Whetstone

£51.16
£51.16
Naniwa Chosera Pro 400 Whetstone

Naniwa Chosera Pro 400 Whetstone

£48.15
£48.15
Naniwa Chosera Pro 1000 Whetstone

Naniwa Chosera Pro 1000 Whetstone

£58.68
£58.68
Naniwa Chosera Pro 2000 Whetstone

Naniwa Chosera Pro 2000 Whetstone

£64.70
£64.70
Naniwa Chosera Pro 5000 Whetstone

Naniwa Chosera Pro 5000 Whetstone

£115.85
£115.85
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Arashiyama #1000 Whetstone Medium Hard with Natural Grit

Arashiyama #1000 Whetstone Medium Hard with Natural Grit

£31.60
£31.60
Arashiyama #6000 Whetstone Stone NO Wooden Base

Arashiyama #6000 Whetstone Stone NO Wooden Base

£43.63
£43.63
Arashiyama #6000 Whetstone With Nagura Stone and Wooden Base

Arashiyama #6000 Whetstone With Nagura Stone and Wooden Base

£46.64
£46.64
Kitayama #8000 Whetstone with Nagura and Wooden Base

Kitayama #8000 Whetstone with Nagura and Wooden Base

£63.19
£63.19
Bernal Cutlery Chromium Oxide Precharged Deburring Strop

Bernal Cutlery Chromium Oxide Precharged Deburring Strop

£26.33
£26.33
Atoma #140 Diamond Stone No Holder

Atoma #140 Diamond Stone No Holder

£78.99
£78.99

Aogami 1 (Blue Paper #1)

Carbon (C): 1.3–1.4%| Tungsten (W): 1.5–2.0%| Chromium (Cr): 0.3–0.5%

Aogami 1 is a high|carbon tool steel (~1.3–1.4% C) with tungsten and chromium additions that enhance hardness and wear resistance. It’s capable of ~65 HRC and maintains excellent edge retention with moderate toughness. The steel sharpens cleanly, forms an exceptionally fine edge, and is common in top|end Japanese kitchen knives. Like other Aogami steels, it rusts easily and requires attentive care.

About HADO

Sakai, Osaka, Japan

HADO is a Sakai-based brand that integrates forging, sharpening, and finishing in-house—rare in a region where these roles are often separate. Founded by former members of Oul Sakai, HADO works with blacksmiths like Yoshikazu Tanaka, Satoshi Nakagawa and Shogo Yamatsuka, while sharpening is led by their in-house grinders. The result is knives with consistent geometry, exceptional edges, and distinctive polish. HADO focuses on clean grinds, comfortable profiles, and high-performance finishes, often using White and Blue carbon steels. By controlling the full process, they offer knives with both artisan quality and a unified design vision.

See All HADO