SKU: 5525128037

Akiharu Mizuno "Tantetsu Goma" Shirogami #2 Honyaki Double-Side Mirror Ripple 360mm Yanagiba

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Description

Akiharu Mizuno "Tantetsu Goma" Shirogami #2 Honyaki Double-Side Mirror Ripple 360mm YanagibaThis "Tantetsu Goma" () mizu honyaki yanagiba was made in 1995 (the 7th year of the Heisei era) to celebrate the 123th anniversary of Mizuno Tanrenjo. The knife was forged by Mizuno's 3rd generation master, late Akiharu Mizuno, and mirror polished and hand sharpened by legendary sharpener Tsutomu Minamiura. This knife has an exquisite honyaki ripple hamon line that is both unique and aesthetically amazing. The beautiful thin grind and thinness behind

This "Tantetsu Goma" (鍛鉄降魔) mizu-honyaki yanagiba was made in 1995 (the 7th year of the Heisei era) to celebrate the 123th anniversary of Mizuno Tanrenjo. The knife was forged by Mizuno's 3rd generation master, late Akiharu Mizuno, and mirror-polished and hand-sharpened by legendary sharpener Tsutomu Minamiura. This knife has an exquisite honyaki ripple hamon line that is both unique and aesthetically amazing. The beautiful thin grind and thinness behind-edge supported by Shirogami #2 make this blade a winner of cutting performance. Paired with a premium custom triple ginmaki rosewood wa-handle with marble buffalo horn kuchiwa.

Comes with a wooden box and a certificate of authenticity. Only one available.

Spec:

  • Origin (Made in): Sakai, Osaka Prefecture, Japan
  • Brand: Minamoto Akitada 源昭忠
  • Workshop: Mizuno Tanrenjo 
  • Craftsman: Akiharu Mizuno 水野 昭治 (Sadaaki Mizuno 水野 貞昭)
  • Sharpener: Tsutomu Minamiura 南浦 力
  • Knife Type: Yanagiba
  • Blade
    • Construction: Mizu-Honyaki
    • Grind: Single Bevel (Right-handed)
    • Steel Type: Shirogami #2 (White #2)
    • Hardness: 64-65 HRC
    • Hand-forged, hand-grinded, hand-sharpened
  • Blade Finishes:
    • Ripple
    • Kyomen (Mirror)
  • Blade Length: 360mm (14.2")
  • Blade Height (at heel): 41mm
  • Spine Thickness
    • Above heel: 4.3mm
    • Middle: 3.3mm
  • Handle
    • Premium Luxury Custom Handle
    • Shape: Hachikaku (Octagonal)
    • Material: Rosewood (Dalbergia Odorifera)
    • Kuchiwa / Tsukajiri: Marble Buffalo Horn
    • Divider: Rosewood (Dalbergia Odorifera)
    • Ginmaki: Nickel Copper (x3)
    • Length: 160mm
  • Overall Length: 533mm
  • Weight: 342g (12.06oz)
  • Engraved Mark: In Japanese Kanji "Tantetsu Goma" (鍛鉄降魔) ; "Sadaaki Mizuno Made" (水野 貞昭作)
  • Comes with a Decorative Wooden Box (Paulownia Box) and Certificate

About Mizuno Tanrenjo 水野鍛錬所 / Minamoto Akitada 源昭忠

Established in 1872, the Mizuno Tanrenjo workshop is one of the most prestigious blacksmith workshops in Japan. Five generations of Mizuno blacksmiths have worked on projects of cultural significance and won accolades for their craftsmanship. The works of 2nd generation blacksmith Masanori Mizuno still hangs on top of the pagoda at Japan's first UNESCO site, and the 3rd generation Akiharu Mizuno - a portage of Japan's national treasure blacksmith Teiichi Tsukiyama - has won a prestigious award for his honyaki yanagiba. The Mizuno family workshop has received two royal visits by Prince Mikasa of Japan, who is personally a fan of their craftsmanship. Today Mizuno Tanrenjo is led by 5th generation master blacksmith - Jun Mizuno (a.k.a. Noritada Mizuno) whose superior craftsmanship and extraordinary honyaki works have been recognized by two of Japan’s top Ichinomiyas (shrines) which have commissioned his katanas to become the shrines’ permanent collections.

About Mizu-Honyaki 水本焼

Mizu-Honyaki is the highest level of Japanese knife making, involving a differential heat treatment achieved by applying clay mud on spine and hira of the blade before heating and water quenching. Very few blacksmiths have the skills of making quality mizu-honyaki, and the failure rate is very high as any tiny crack during the heat treatment forfeits the entire blade. A fine mizu-honyaki is always costly due to the scarcity of blacksmiths and high failure rate.

Care:

Shirogami #2 (white #2) steel is one of the most popular types of high carbon steel found in Japanese kitchen knives (Wa Knives). It is not stainless, therefore you must 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. 

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SKU: 5525128037

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Mariano
Pawtucket, US
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Great Place to Start
Format: Paperback
Clear and entertaining
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Reviewed in the United States on February 17, 2026
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Austin
Phoenix, US
★★★★★ 5
Engaging Read for Beginners and Techies Alike
Format: Paperback
An engaging and accessible exploration of how computers really work. The author breaks down complex concepts into simple, relatable explanations, making topics like binary, logic gates, and basic circuits far less intimidating. For newcomers, it’s a great way to build a foundational understanding of computer theory with just a touch of electrical engineering. As someone with a technical background, I still found it entertaining; the examples and analogies added fresh ways to frame ideas I already knew. It’s the kind of book that can bridge the gap between “I use computers” and “I understand what’s happening under the hood.” Highly recommended for anyone curious about what makes hardware and software tick, whether you’re starting from scratch or just want a new perspective.
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Reviewed in the United States on August 19, 2025
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Peter
Natrona Heights, US
★★★★★ 5
CODE is the book you should get.
Format: Paperback
The best book to enter the field. Grateful that Charles Petzold decided to write it, even happier this was one of the first books I picked up. Recommend to everyone wanting to become a programmer, or just interested in computers.
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Reviewed in the United States on January 12, 2026
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Michael Donoghue
Massapequa, US
★★★★★ 5
If you only buy one technical computer book, this is it
Format: Paperback
Disclaimer: I owned the first edition for years and read it a dozen times, mainly for pleasure since it’s not only informative but also just enjoyable to read. I’m a professional software architect and have dozens of textbooks on computer science and engineering so I’ve been around the block. This is the kind of book I would buy all for all my friends (if I had more than a couple) and family members (if they were even slightly into computers, which they aren’t sadly). Petzold does an exceptional job at describing digital logic and guides you through building a conceptual CPU from very first principles. I think his bottom up approach is the way to go and has helped me understand complex topics in an extremely simple way. When I’m not reading fiction, this is my go to bedtime reading. The second edition has about 100 more pages than the first and some content has been completely reworked and it’s great. If you ever had even a passing interest in knowing how computers work at a very fundamental level, get this book!
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Reviewed in the United States on January 31, 2023
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Yura
Lake Worth, US
★★★★★ 4
First programmer?
Format: Paperback
As an ardent reader of the past 1st edition, I was fairly excited to get the latest version. That is, until I encountered the history chapter of the new edition. For one thing, what I do NOT understand in this second edition is the newly added description of August Ada Byron (countless of Lovelace). The author claims it was Babbage who was the first programmer to design the engines, not Ada. I am not trying to start a futile argument here about who has more or fewer contributions, etc. What I am trying to assert here is that it is undisputed that Ada (unless the new evidence arises) left *the very first demonstration* of what this seemingly imaginary machine, which didn't even physically exist, was capable of through her program. Because Babbage designed the engine itself, that doesn't automatically put him in the position of a programmer (despite Babbage being a brilliant engineer/scientist and may have had a simple or detailed program in his mind). However, it was Ada who gave a definite touch to programming concepts that ultimately led to modern-day programming. Ada deserves more recognition than a mere "tutorial writer," and she is certainly entitled to the title she deserves. Other than that, like the previous edition, this book is a must-read for people who are from related/unrelated fields. I always loved the 1st edition, and I would do too with the 2nd. Still, I think history should always be approached with more care, particularly if matters have potential controversies.
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Reviewed in the United States on January 6, 2023

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