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| An anagama (a Japanese term meaning "cave ]") consists of a firing chamber with a firebox at one end and a flue at the other. The term ''Anagama'' is often limited to describing single-chamber kilns built in a sloping tunnel shape. The term ''Noborigama'' is used to describe a climbing kiln, with the chamber pierced at intervals with stacking ports, and built on a steeper slope so that a better updraft can be achieved. The climbing kiln has been used in Japan since the 17th century. The ''Renboshiki noborigama'' is a multi-chambered climbing kiln. | An anagama (a Japanese term meaning "cave ]") consists of a firing chamber with a firebox at one end and a flue at the other. The term ''Anagama'' is often limited to describing single-chamber kilns built in a sloping tunnel shape. The term ''Noborigama'' is used to describe a climbing kiln, with the chamber pierced at intervals with stacking ports, and built on a steeper slope so that a better updraft can be achieved. The climbing kiln has been used in Japan since the 17th century. The ''Renboshiki noborigama'' is a multi-chambered climbing kiln. | ||
| Unlike electric or gas-fueled kilns used by contemporary ]s, the anagama is fueled by wood. A large amount of fuel is needed for firing, with stoking occurring round-the-clock until an appropriate temperature is reached. Burning wood not only produces heat — up to the 1400 °C required to mature ] and ] pieces — but it also produces ''fly ash''. Wood ash settles on the pieces, melts and creates a textured glaze, often with brilliant color. The placement of pieces within the kiln also affects the pottery's appearance, as pieces closer to the firebox may receive heavy coats of ash while others may only be touched by ash affects. | Unlike electric or gas-fueled kilns used by contemporary ]s, the anagama is fueled by wood. A large amount of fuel is needed for firing, with stoking occurring round-the-clock until an appropriate temperature is reached. Burning wood not only produces heat — up to the 2,500 degrees F (1400 °C) required to mature ] and ] pieces — but it also produces ''fly ash''. Wood ash settles on the pieces, melts and creates a textured glaze, often with brilliant color. The placement of pieces within the kiln also affects the pottery's appearance, as pieces closer to the firebox may receive heavy coats of ash while others may only be touched by ash affects. | ||
| The length of the firing depends on the volume of the kiln, and may take anywhere from from 48 hours to a week. The kiln generally takes the same amount of time to cool down. Records of historic firings in large Asian kilns shared by several village potters describe several weeks of steady stoking per firing. | The length of the firing depends on the volume of the kiln, and may take anywhere from from 48 hours to a week. The kiln generally takes the same amount of time to cool down. Records of historic firings in large Asian kilns shared by several village potters describe several weeks of steady stoking per firing. | ||
Revision as of 18:00, 28 December 2005
1 Door about 75cm wide
2 Firebox.
3 Stacking floor made of silica sand.
4 Dampers.
5 Flue.
6 Chimney.
7 Refractory arch
The Anagama kiln is an ancient method of firing pottery discovered by the Chinese in approximately the 5th century. This pottery technology, with related pottery construction methods, then spread to Korea and from there was taken to Japan.
An anagama (a Japanese term meaning "cave kiln") consists of a firing chamber with a firebox at one end and a flue at the other. The term Anagama is often limited to describing single-chamber kilns built in a sloping tunnel shape. The term Noborigama is used to describe a climbing kiln, with the chamber pierced at intervals with stacking ports, and built on a steeper slope so that a better updraft can be achieved. The climbing kiln has been used in Japan since the 17th century. The Renboshiki noborigama is a multi-chambered climbing kiln.
Unlike electric or gas-fueled kilns used by contemporary potters, the anagama is fueled by wood. A large amount of fuel is needed for firing, with stoking occurring round-the-clock until an appropriate temperature is reached. Burning wood not only produces heat — up to the 2,500 degrees F (1400 °C) required to mature stoneware and porcelain pieces — but it also produces fly ash. Wood ash settles on the pieces, melts and creates a textured glaze, often with brilliant color. The placement of pieces within the kiln also affects the pottery's appearance, as pieces closer to the firebox may receive heavy coats of ash while others may only be touched by ash affects.
The length of the firing depends on the volume of the kiln, and may take anywhere from from 48 hours to a week. The kiln generally takes the same amount of time to cool down. Records of historic firings in large Asian kilns shared by several village potters describe several weeks of steady stoking per firing.
Regions producing ceramics in wood-fired kilns, throughout history and in all areas of the world, have often seen periods of deforestation due to the use of wood for fuel.
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