SKU: 72858637433

Otsuka Hamono Aogami #1 Kurouchi 160mm Bunka

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Description

Otsuka Hamono Aogami #1 Kurouchi 160mm BunkaFrom the secluded mountain forge of master Otsuka Yoshifumi comes this exceptional Bunka, a knife bearing the 'Tokusei' (Specially Made) mark of distinction. Forged in a traditional coke fire, its core of high carbon Aogami #1 steel is revered for legendary sharpness and edge retention. The blades profile is a marvel of performance, featuring a dramatic spine taper from a powerful widened thickness of 6. 6mm than drastically tapered to a nimble tip.

From the secluded mountain forge of master Otsuka Yoshifumi comes this exceptional Bunka, a knife bearing the 'Tokusei' (Specially Made) mark of distinction. Forged in a traditional coke fire, its core of high-carbon Aogami #1 steel is revered for legendary sharpness and edge retention. The blade’s profile is a marvel of performance, featuring a dramatic spine taper from a powerful widened thickness of 6.6mm than drastically tapered to a nimble tip. This unique geometry provides a perfect weight balance of strength for robust cuts and precision for delicate work, all housed within the rustic beauty of the Kurouchi forged finish. Paired with a premium octagonal Wenge and buffalo horn handle.

Spec:

  • Origin (Made in): Chizu, Tottori Prefecture, Japan
  • Brand: Otsuka Hamono
  • Knife Type: Bunka
  • Blade
    • Construction: Sanmai
    • Grind: Double-edged Blade (50/50 Grind)
    • Hagane (Core Steel): Aogami #1 (Blue #1)
    • Jigane (Cladding): Soft Iron
    • Hardness: 61-63 HRC
    • Hand-forged, hand-ground, hand-sharpened
  • Blade Finishes:
    • Kurouchi
  • Blade Length (heel-to-tip): 160mm (6.3")
  • Blade Height (at heel): 48mm
  • Spine Thickness
    • Above heel: 6.6mm 
    • Middle: 1.8mm 
  • Handle
    • Shape: Hachikaku (Octagonal)
    • Material: Wenge
    • Kuchiwa / Tsukajiri: Black Buffalo Horn
    • Length: 129mm 
  • Overall Length: 300mm 
  • Weight: 156g (5.5oz) 
  • Stamped Mark (Back): Brand mark and in Japanese Kanji "Specially made" (特製)

About Otsuka Hamono 大塚刃物

From his secluded forge in the mountains of Chizu, Tottori, third-generation blacksmith Otsuka Yoshifumi represents a legacy reborn through sheer will. Largely self-taught after his father’s untimely passing, he works alone, embracing a solitary dedication to his craft. Using a traditional coke forge to preserve the steel’s integrity, he masterfully transforms Aogami #1 and exceptionally rare tatara steel into fully bespoke blades. Each creation is a direct dialogue with its future owner, resulting in tools of sublime sharpness and durability. The year-long waitlist underscores the deep allure of his uncompromising, personal artistry.

Care:

Aogami #1 (Blue #1) steel is a premium Japanese high carbon steel for knife making. Despite some corrosion resistant quality (for a carbon steel), it is not stainless, therefore you should wipe your knife dry after each use. Patina will develop over time. Rust may develop if left in prolonged contact with water or acidic food. Use a rust eraser to clean if rusts develop. Avoid cutting into bones, frozen foods, hard fruit pits.

Cutting Surface:

Recommended cutting surface: wood, rubberized boards and high-end composites, and quality plastics such as polyethene make acceptable cutting surfaces, and will help protect and prolong knife’s edge. AVOID glass, metal, countertops, and other rigid, non-forgiving surfaces.

Sharpening:

We recommend sharpening all quality Japanese knives on whetstones, as we believe they yield the best results for your knives.

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 72858637433

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Reviewed in the United States on January 9, 2026
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★★★★★ 5
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Our dog loves these!
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Reviewed in the United States on May 26, 2026
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Timothy john starkweather
San Leandro, US
★★★★★ 4
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The orange and blue ball is perfect. Once start taken because the because the blue noisy one was a little to easy for my dog to start ripping pieces off. Will say most toys do not survive his chewing.
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Reviewed in the United States on January 24, 2026
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Christy D.
Lake Worth, US
★★★★★ 5
Aggressive chewer who loves fetch approved!!
Size: Medium, Size: Medium
I highly recommend the Chuck-It brand in general, especially for dogs with an aggressive bite. These balls are awesome and are the most durable balls I’ve bought for my 50 lbs lab mix. He has not been able to break one of them yet and we’ve had a few of the squeaky balls for months. They are a bit pricey but worth it. The one in the pic has been used for months, lives outside and you can see it’s still in great shape.
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Reviewed in the United States on June 22, 2025
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Tasha U
Port Orchard, US
★★★★★ 5
Good quality dog ball for playing fetch
Size: Medium
My dog and family love these chuck it balls to play fetch with our dog. They are durable and fun. They squeak which is added fun for any dog! Regular tennis balls my dog chews apart and they get pretty gross after playing and being left outside. These can be easily washed off and cleaned. These balls last! Would recommend to anyone with a dog and would purchase again.
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