Japanese Plane Koyama Hira Kanna 42 mm
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Product detailed description
Japanese Plane Koyama Hira Kanna 42mm
The Japanese plane kanna is a traditional tool used for precise woodworking. Hand planes are the main tools of Japanese carpenters working on the construction of Shinto shrines and traditional wooden houses. They are used for working wood without leaving scratches and damaging the wood fibers, which could disrupt its "breathing". This method of processing is crucial for preserving the natural properties and longevity of the wood, which is an integral part of traditional Japanese architecture. Due to its efficiency, precision, and elegance, kanna is an indispensable tool in traditional Japanese carpentry work. The Hira Kanna plane from Koyama features a 42 mm wide laminated blade made from carbon steel Aogami Blue Steel coated with soft iron and a body made from Japanese oak. It is equipped with a chip breaker, which helps stabilize the blade and facilitates chip removal during use. Thanks to the design where the blade is independently held by the body, the plane can also be used without the chip breaker. This compact and practical Japanese plane is designed for smoothing and finishing flat wooden surfaces. With proper blade adjustment, it is capable of cutting exceptionally thin shavings to achieve a perfectly smooth surface. It is ideal for precise fine-tuning of small parts or gentle thinning of boards during precise work. It is suitable for beginners, carpenters, carpentry apprentices, carvers, and furniture restorers.
Detail
Production: Japan
Brand: Koyama
Model: Hira Kanna 42 mm
Blade Width: 42 mm
Body Size: 180 x 52 x 22 mm
Steel: carbon steel Aogami Blue Steel
Manufacturer
Koyama is a Japanese manufacturer of traditional planes known as kanna. Their tools are valued for high quality craftsmanship and are popular among craftsmen worldwide. Koyama offers a wide range of planes, including profiled planes and compass blade planes. Some models are equipped with bodies made from a new material called "New Oak," which is an artificial material that eliminates the need for tuning the plane before use.
JP KOYAMA HARDWARE Co.,LTD, 673-0443 37 Tomoe, Bessho-cho, Miki-shi, Hyogo, Japan, Phone: 0794-82-0711 CZ Tokyo Tools s.r.o., Slovinská 652/19, Prague 10, 10100, CZ, 773707811, info@tokyotools.cz
Material
The blade is made of laminated carbon steel Aogami Blue Steel coated with soft iron. The body is made from Japanese oak.
Maintenance
Maintenance of the Japanese plane includes regular sharpening of the blade on whetstones and checking the flatness of the base, which should be adjusted as necessary for perfect surface contact. The wooden body of the plane is important to protect from moisture and should occasionally be treated with oil to prevent deformation. With proper care, the kanna will provide long life and precise results.
Usage
The Japanese plane kanna is a traditional tool used for precise woodworking. Unlike western planes, the kanna is used by pulling towards oneself, which allows for greater control and precision when planing. It has a simple yet ingenious design: a wooden body (dai), a main blade (kanna-ba), and a chip breaker that helps control shavings.
The thickness of the shavings with a Japanese kanna plane is regulated by manually adjusting the blade. A deeper set blade creates thicker shavings, while a less extended one makes finer shavings. For precise tuning, the blade is gently tapped with a wooden mallet:
On the blade from above: pushes the blade deeper.
On the plane body from the back: slightly pulls the blade out.
Before the first use of the Japanese plane, it is necessary to set it up correctly, which can take approximately 1–2 hours. This process includes flattening the back of the blade, sharpening the edge, adjusting the chip breaker for proper function, and fine-tuning the plane's body. The setup is fairly complex, but it not only shows the craftsman how the plane works properly but also provides a deeper understanding of its construction and the subtle details that affect the quality of the work. Proper adjustment of the plane is essential for its optimal performance and long life.

Slow Craft, Deep Focus
A tribute to the art of conscious creation, slowing down in the studio, focused work in the carving workshop.
Tags: Joseph Marples England
The family-owned English company is proof that truly precise products withstand the test of time.
Matěj Sysel from Gas & Oil Motorcycles
Under the brand Gas & Oil, Matěj builds custom motorcycles. When he encountered the Café Racer culture, it was love at first sight.Koyama je japonský výrobce tradičních hoblíků známých jako kanna. Jejich nástroje jsou ceněny pro vysokou kvalitu zpracování a jsou oblíbené mezi řemeslníky po celém světě. Koyama nabízí širokou škálu hoblíků, včetně profilových hoblíků a hoblíků s kompasovou čepelí. Některé modely jsou vybaveny těly z nového materiálu nazývaného "New Oak", což je umělý materiál, který eliminuje potřebu ladění hoblíku před použitím.
