This 54mm Uchimarukanna curved inside plane, manufactured by Hon-Nagakuni , is designed for the precise shaping of concave surfaces. The term Uchimarukanna refers to a plane specifically designed for internal hollowing. This series is offered in several curves corresponding to different diameters: 120mm, 150mm, 210mm, 240mm, 270mm, 330mm, 360mm, and 390mm. This variety allows you to choose the exact radius needed for the shape of the work to be done, from the tightest to the widest.
The blade is made of Blue Steel #1 , a premium Japanese steel renowned for its exceptional sharpness and durability. The plane's body is crafted from Japanese white oak, a strong, stable wood ideal for transmitting cutting force while offering a good feel and control. As with all handcrafted Japanese planes, the tool requires initial sharpening, precise wood fitting, and some adjustments before reaching its optimal performance. Each piece may exhibit slight variations due to its handmade nature.
Each diameter corresponds to a specific use: the 120 mm and 150 mm models are suitable for very tight curves and deep recesses. The 210 mm and 240 mm models are suitable for intermediate curves. The 270 mm diameter offers a versatile medium radius, while the 330 mm, 360 mm, and 390 mm are designed for wide curves, smooth transitions, and large rounded surfaces. This wide range of choices makes the Uchimarukanna series an extremely versatile set for fine woodworking, furniture making, and any complex work on curved shapes.
