An ornament used to conceal the head of a large nail on a pressing tie rail *nageshi 長押 and on doors. Made of wood, copper, iron, or gilt bronze. From the Momoyama period techniques of cloisonné *shippō 七宝, inlay *zōgan 象嵌, and openwork *sukashibori 透彫, decoration were used, and new materials such as ceramics were introduced. Pre-10th-century kugikakushi were hemispherical in shape and known as *bai 唄, manjū kanamono 饅頭金物 (see *manjūgata 饅頭形) or *chichikanamono 乳金物. From about the 10th century, kugikakushi were designed using a circle of flower-petal shapes. The most common types were the four-petalled *shiyō 四葉, six-petalled *rokuyō 六葉, and eight-petalled *hachiyō 八葉. They consisted of a central projection *taru-no-kuchi 樽の口 (cask plug), a round body *kikuza 菊座, and surrounding petal shapes *zagane 座金.
