HAP40 Steel Japanese smoothing plane Tsunesaburo Easy maintenance blade

HAP40 Steel Japanese smoothing plane Tsunesaburo Easy maintenance blade

Tsunesaburo is one of the most famous woodworking molding plane brand in Japan.
The blade part is made of HAP40 Steel. HAP40 Hitachi Powdered High Speed Steel takes and holds an edge better than any other steel. We think it holds the potential to become one of the best steels on the market for the production of high quality blade. HRC of this blade is approx 65 and you will find this blade will hold its edge an amazingly long time.

-- Features of This item --

*Please select size;
Plane blade width 36mm, Cutting width 33mm, Total length 65mm / stand size: Total length 212mm, Width 52mm, Height 25mm
Plane blade width 42mm, Cutting width 39mm, Total length 70mm / stand size: Total length 212mm, Width 57mm, Height 27mm, 500g
Plane blade width 50mm, Cutting width 45mm, Total length 80mm / stand size: Total length 212mm, Width 65mm, Height 28mm
Plane blade width 55mm, Cutting width 48mm, Total length 90mm / stand size: Total length 240mm, Width 72mm, Height 33mm

*Blade Material
Core blade: HAP40 Steel
Base blade: soft iron

*stand Material: Quercus myrsinifolia (Japanese shirakashi wood), wood grain varies
*Mouth: normal

*Note: size and weight, approx
*Handling time: 14 to 60 business days / After order craftsman will give the last finish.
*Made in Japan
*A brand new, Price is include a Kanna plane.

About Tsunesaburo
Mr.Tsuenzaburo Uozumi, a first-generation plane blade maker studied under Mr. Fukuzaburo Kanna since he was a child and has mastered the secrets of process for making plane blade for 28years. He established the Tsunesaburo Plane Works Co., Ltd. in 1947. A third-generation of the Tsunesaburo family, Mr. Toru Uozumi who currently takes over a business crafts various type of plane according to the purpose of use utilizing both the traditional method and modern equipment. It provides excellent sharpness, high durability and usable from hard materials to softwood and laminated wood. The Tsunesaburo bland built a reputation all over the world especially woodworkers and craftsmen who make musical instruments.


Stable high quality
The plane is made from high class steel, mainly the finest blue steel, for core blade material and soft iron carbon steel for base blade material. The processes are all done by hand(called Koshiki tanzo). Controlling hardening and tempering, the key to make stable quality plane blade, is operated with not only depending on intuition of experienced craftmen, but using several thermometers.
*Only high-speed steel(SKH51) is done by press working.


Body stand is made from Japanese quercus myrsinifolla which is completely dried over 3 years. Hardly warped, providing strength and resistant to aged.

Special Techniques of Tsunazaburo
The easy maintenance plane blade: unnecessary “ura dashi” kanna
Regular plane has legs called “ashi” on both sides.(left below: necessary “ura dashi” kanna)
On the other hand, this easy maintenance plane blade doesn’t has legs but being processed as a large R-bending from the blade steel end point(Kaisaki) to the blade edge. Therefore, it’s only needed to whet back side of the blade even when the end of the blade is abraded.





FYI:How to “ura dashi kanna”
https://www.youtube.com/watch?v=_wSuN68Log0