mizoganna　溝鉋

KEY WORD :　architecture / tools

Also known as shakuriganna 决鉋. A plane used exclusively for making grooves in a doorsill or lintel. If the width of the groove is 7 bu 分, or approximately 21mm, then the plane and cutting blade also measures 7 bu. The plane is narrow, but its elevation from the sole, daizura 台面, is high enough to ensure that the cutting blade fits securely , and make the plane easier to hold. The wood shavings are ejected from a semi-circular opening in the side of the plane stock. Unlike the *anazukikanna 穴突鉋, which is also used to make grooves and has a special blade known as wakibari 脇針 for planing the sides of the groove, the mizoganna has no wakibari. Thus, a side-shaving plane wakiganna 脇鉋, is used to shave the sides of the groove.

A) Opening for the ejection of shaving. B) Capping iron. C) Cutting blade. The cutting blade and capping iron are fitted into the sole.

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