Application of Shikkui finish coat at Kura project in Japan
Orekugi: A type of hooked nail made from one piece of iron. It is bent at a right angle and is square in cross section. Orekugi are used for both the interior and exterior of a KURA-warehouse and tea ceremony house. There are many different sizes and most have stops or guards which determine the extent to which the nail can be inserted into a wall, post, or molding. Orekugi are named according to their placement, or purpose. There are many types of bent nails.