kiwaganna　際鉋

KEY WORD :　architecture / tools

A plane used for shaving and finishing the sides of a mortise or an internal angle. There is a plane for left-side cutting and another for right-side cutting, but they are normally used as a pair. The kiwaganna cutting blade is like the blade of a smoothing plane *hiraganna 平鉋, but the side of the cutting edge is bevelled, and it has a raked edge. The right-side cutting plane, has raked teeth on the right that do not drop to form an ear, but make an acute angle. The plane stock falls away at an angle so that the mouth meets the side of the block in line with the cutting blade. In other words, the plane stock is constructed so that the sole and the side of the block form a right angle, and the cutting edge of the blade is always held in a position that is in agreement with the side of the block. This allows the timber edges to be cut with precision.

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