Otani Yaki is one of the earthenware representing Shikoku that is continued burning for approximately 200 years in Osacho, Naruto-shi, Tokushima. What stature molds using "shin potter's wheel" (it becomes set for two people, and one is in charge of molding and one lies and kicks with foot and turns potter's wheel) for production of big game earthenware of a certain pot and water lily bowl is particularly famous, and, as for the size of ascending kiln baking it, all Nihonichi of them is described as. In addition, it is characteristic to be strong while being very thin by potter's wheel technology that bottle and cup is precise.
Otani yaki, which has been made in the Oasa-cho district of Naruto city in Tokushima Prefecture for about 200 years, is one of Shikoku’s most iconic potteries. Large-size jars and bowls for water plants that can reach a person’s height are made using giant “ne-rokuro” potter's wheels (manned by two people, one in charge of molding while the other lies and turns the wheel with his or her feet) and are then baked in a large ascending kiln reputed to be the largest in Japan. In addition, liquor vessels, thanks to very elaborate turning techniques, have the characteristic of being both very thin and yet very sturdy.
How to make
We are about to soak Hagiwara clay with much iron content, Sanuki clay and Himeda clay using glaze which mixed Himeda clay, lime, soil ash, feldspar, silica stone, iron as main material with sedimentation clay and we drain and hang glaze by credit and do Otani Yaki. Main processes of Otani Yaki hang crush, sieve, elutriation, soil kneading on fire, mixture, molding, drying, life, and, by unglazing, hodokoshiuwagusuri, kiln filling, burning, inspection, each process is performed by hand, and potter's wheel, iron, tortoise board, cloth, plane, cowhide, cutoff string, brush, traditional tool such as ladle are used.
The main raw materials of Otani yaki are clays of Hagiwara, Sanuki and Himeda which are sedimentary clay very rich in iron. The glaze used is composed of Himeta clay, lime, wood ash, feldspar, silica and iron, which is applied by dip or flow coating. The main stages of Otani yaki are, crushing, sieving, levigation, kneading, mixing, molding, drying, green-ware glazing, bisque-firing, glazing, kiln-loading, firing and inspecting, each one of which is performed manually using traditional tools such as potter's wheels, trowels, kameita, cloth, planes, leather, cut yarn, brushes and ladles.