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Products Description




2006 Koshino Kozo Yasuki Steel-clad Koryu Scissors 165mm
The Koshino Kozo Yasuki Steel-clad series is made using traditional methods by Tsubota, a specialist scissors manufacturer in Sanjo, Japan.
The blades are clad with Yasuki steel, and each pair is a superb article made by an integrated manufacturing process of forging, cladding in steel using traditional methods, and traditional tempering.
• Many typical shears use low carbon steel with low hardness, but this Koshino Kozo Yasuki Steel-clad series has high carbon content and is traditionally tempered in a hot bath, so it achieves high hardness with resistance to wear.

• What is Yasuki steel?
• For centuries, Tamahagane steel made from extremely pure iron sand was used as the material for the finest Japanese swords. This tradition of Tamahagane steel is still carried on today in new forms, and produces reliably high-quality steel with extremely few impurities.
• What is forging?
This technique is used to shape and harden material by heating it and hammering it, and forging creates a finer structure in the steel, making it harder and tougher.
• What is cladding?
By combining steel and another metal to create a blade with two layers, it is possible to use a steel with high hardness for the steel part, increasing the overall hardness. However, since it combines two layers of different materials, it is prone to warping during manufacturing, and requires a lot of work by hand, so this method is generally used mostly by high-grade blade manufacturers.
• Traditional hot bath quenching
The quenching vessel is filled with a solution heated to a quenching temperature suitable for the steel (825°C to 1,050°C), and the steel parts are kept in the hot bath to produce a uniform hardness to the core of the steel. In contrast, there are also quenching techniques that only harden the surface, similar to plating.
The combination of cladding and traditional quenching produces uniform high hardness that can withstand repeated sharpening, making shears that can be restored to near the sharpness of when they were new.




• Koryu Scissors 165mm
• Use them for flower arranging and flower cutting. They can also cut thick branches.

• User Precautions
• Each item is individually handmade, so the weight and dimensions may vary slightly.
• The tips of the blades are sharp, so be very careful when using them.
• Store them out of the reach of children.
• When cutting thick or hard material, cut a little at a time while rotating the piece, and avoid twisting the blades.
• These are flower cutting shears, so do not use them to cut metallic objects like iron or galvanized sheet metal.


Size
Total length approx. 180 mm
Materials
Blade/Yasaki YCS3 steel, Body/Iron
Weight
approx. 220g


We can replace the existing logo with your desired logo. Available for orders of at least 600 units.


Company Profile






TSUBOTA CO., LTD.



We manufacture the highest quality metal cutting shears and gardening bonsai shears. Using the finest Yasuki steel, each piece is handcrafted through traditional forging, steel bonding, and hardening techniques, ensuring all processes are completed in-house.
- Steel Bonding Method:
This method uses a two-layer material combining steel and base metal for the blade, allowing the use of high-grade steel for the cutting edge, resulting in higher hardness and superior durability.

- Traditional Heat Bath Hardening:
By immersing the blade in a heated solution during the hardening process, we achieve uniform hardness throughout the steel core. Combining the steel bonding method with traditional hardening techniques, our shears offer consistent high hardness and can be sharpened to restore their original cutting edge.


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