Masuda Yoshihide AO1 Custom Green Damascus Gyuto 230mm
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Masuda Yoshihide AO1 Custom Green Damascus Gyuto 230mm
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SPECIFICATIONS
Knife Style: Gyuto
Steel Type: Carbon Steel
Blade Material: Aogami Blue #1
Blade Finish: Kurouchi Damascus
Blade Hardness: 63HRC (+/-1)
Bevel: Double
Handle: Stabilized Wood
Blade Length: 230mm
Heel Height: 52mm
Spine Thickness: 3.80mm tapered to 1.50mm
Weight: 228g
his one isn't your everyday knife—it's a true one-of-one, custom assembled by our team here at Kakushin.
The blade comes from Masuda Yoshihide of the Masuda Hamono / Kiridashi Factory in Sanjo, Niigata—a small family workshop dating back to the early Showa era (1930s). As a third-generation blacksmith, every step of production remains under one roof, from forging and heat treatment to grinding and finishing, preserving the traditional craftsmanship Sanjo is known for.
At its core is Aogami #1 carbon steel, prized for taking an incredibly fine edge with a crisp, precise cutting feel. The blade is clad in Damascus beneath a dark kurouchi finish, creating subtle contrast and depth while ensuring every knife has its own unique character.
To elevate it even further, we assembled it onto a striking custom mono stabilized wood handle in a rich green tone. Bold yet elegant, the uninterrupted grain gives the handle incredible visual flow, while the vibrant green perfectly complements the blade's darker finish. It's a configuration that immediately stood out to us—modern, distinctive, and unlike anything you'll find from the factory.
This version features a 230mm gyuto profile with a nice heel, giving it more knuckle clearance than a traditional japanese knife. The spine measures 3.8mm above the handle before tapering smoothly toward the tip, delivering an excellent balance of power through dense ingredients while maintaining outstanding precision for finer work. Rounded and polished spine and choil complete the premium feel.
From the hand-forged Aogami #1 core and Damascus kurouchi finish to the custom green stabilized handle assembled in-house, every detail of this knife was chosen to create something truly unique. No duplicates, no production run—just one exceptional build for someone who appreciates owning what nobody else can.
◻️ Additional Information
Please note that colours, shading, and overall appearance may vary slightly between photos and the product you receive. Lighting, camera exposure, and reflections on materials like steel, epoxy, and wood can all create subtle differences.
Many of our items are handmade, which means each piece has its own character. Minor variations in pattern, texture, or finish are normal and part of the craft.
If you’d like to see additional photos or close-ups of any item, feel free to request them before or after placing your order—especially for one-of-a-kind pieces. We’re always happy to help you choose the perfect knife or handle.
◻️ Sharp Certified
Before our knives are shipped, each one undergoes a rigorous sharpness test to ensure they meet the highest standards of quality. Our BESS Certified sharpness scale will guarantee that your knives deliver the smoothest cuts.
This commitment to sharpness not only guarantees that you receive a product that's ready to perform at its best but also reflects our dedication to delivering excellence in every aspect of our field.
◻️ Shipping & Returns
Every product listed on our website is physically in stock at our shop and typically ships within 24 hours — giving us enough time for sharpening and proper packaging.
The only exceptions are custom knife assemblies or engraving, which may require 3-5 days before shipping. Everything is done in-house, so even with the extra steps, it’s still exceptionally fast.
Canadian orders can say goodbye to unexpected duties, additional customs fees and exchange rate fluctuations; all our prices are clear and upfront.
For international orders, we take care of providing the declarations documents on items from foreign countries.
We know choosing a knife online isn’t always easy. To make things stress-free, we offer a flexible 30-day Return Policy on regular-priced items. Take a look at our full policy for all the details!
◻️ Contact Us
We are at your service through email, social media, or even by phone, where you can have a direct conversation with one of our team members during our business hours.
Whether you require assistance with your existing product, have inquiries about a potential purchase, need more specific details, additional photos, or even a video to get a better sense of the product in a real human hand, we've got you covered.
Don't hesitate to get in touch.