Paulownia wood panel, aluminum foil, and water drying. Aluminum foil is directly pasted on paulownia wood panel, and the still life is heaped up. Washi paper is not used. The back is coated with water-based urethane varnish. Nihonga" is based on a style of painting that has continued for more than 1,000 years, and the materials used for the painting are old, traditional materials that have been cultivated throughout history. It is a technique of painting on Japanese paper, silk, wood, etc., using natural paints such as sumi ink, iwa-enogu (mineral pigments), gofun (gofun), etc., and glue (nikawawa) as an adhesive. Gold and other metal materials (gold leaf, etc.) are also used. Iwa-enogu, made from ores, is a beautiful, sand-like powder. Mizuhigure, made from clay, is a fine, stretchy paint with fine particles. Artificial versions of iwa-enogu and mizuhoshi egur are also made, and are available in a wide variety of colors. Goko, made from shells, is a white pigment with fine particles.
