kerakubi　螻首

KEY WORD :　architecture / joints

1　A tenon *hozo ほぞ and mortise *hozoana ほぞ穴 joint in which the tenon is indented like a neck. The indentation allows the tenon to slide into the mortise enabling the protruding parts to hug the neck, kubi 首, like a collar. This joint is used to join an upright member to a ground sill. 2　The neck part of the long handle that is connected to the dipper of a tea ceremony ladle *hishaku 柄杓. In this case it is called mitsu-no-sumi 三の角 (3-cornered joint).

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