The Production Process
A wooden modeling tool.
There are many steps in the production of Arita ware.
- Porcelain stone is quarried (cut out), and then crushed and ground into powder.
- The powder is mixed with water to create clay.
- The clay is kneaded well, then is formed on a spinning potter's wheel. Spinning the wheel at will
is very difficult and takes a lot of practice. Once the shape is completed, the piece is dried.
- In a process known as bisque firing, the piece is fired in a kiln at 900 degrees Celsius, making it
a little sturdier.
- Underglaze decoration - patterns, drawings, and paintings - is applied.
- A coating called glaze, which becomes glassy when fired, is applied on the entire surface. The underglaze
decoration becomes concealed at this point.
- The piece is again fired, this time at a high temperature of about 1,300 degrees. Glaze firing hardens
the piece into mature porcelain, and the surface becomes glassy and transparent, once again revealing
the underglaze decoration.
- Overglaze is applied. When using additional colors, like red, yellow, green, and gold, they are applied
after the glaze firing.
- Finally, the piece goes through overglaze firing at about 800 degrees. This brings out the brilliant
colors of the overglaze.