Stilts are small supports used when firing glazed ceramics to stop the melting glaze from fusing them to each other or the kiln. [1] [2] [3] Stilts are a form of kiln furniture. [4] Their presence in archaeological sites, where they may be known as pernette, along with other kiln furniture such as saggars and kiln bars can be used to support a case for local production. [4] Some potters avoid the need for stilts by not glazing the bottom of their products. [5] This is known as dry footing. [5]
Various types of stilts have been developed over the centuries:
The tripod stilt, which has three legs with a raised point on each end, appears to have been developed in China at least as far back as the third century AD. [2] [6] Tripod stilts have been found during excavations in Ur. [7]
It was adopted by the Islamic world in the 9th century AD and was later adopted by the Byzantines around the start of the 13th century. [2] The use of this stilt can be deduced from damage to the glaze where the three raised points were in direct contact with it. [2] A similar type of stilt appears to have been used in the Staffordshire area and perhaps Scotland between the 1760s and 1850s. [8]
Ring stilts, which consist of a ring with three raised points of clay placed at equal distances around the rim, were in use in the second half of the 18th century. [8]
Crown stilts were in use during much the same time period as ring stilts. [8]
A stilt has been found at a Roman kiln site near Holt, Wrexham County Borough dating to around the first or second century AD. [9] It was designed to be used within a saggar and has clay pads supporting it within the saggar. [9]
In archaeology, they may be upside-down baked clay tripods, leaving characteristic marks at the bottoms of the pottery/porcelain. [10] [11] They expose the bottom of the fired piece to the full heat [12] and prevent the pieces from sticking to each other.
In the 19th century centralised industrial production of molded three-arm stilts began common in the UK with Staffordshire exporting them to other parts of the country. [13] Some of the manufactures appear to have used distinctive mold designs. [13]
Stilts are still used and produced today and are marketed by pottery suppliers. [7]
Some researchers have used kiln stilts as a settlement substrate for coral larva including those of the species Dendrogyra cylindrus . [14]
Pottery is the process and the products of forming vessels and other objects with clay and other raw materials, which are fired at high temperatures to give them a hard and durable form. The place where such wares are made by a potter is also called a pottery. The definition of pottery, used by the ASTM International, is "all fired ceramic wares that contain clay when formed, except technical, structural, and refractory products". End applications include tableware, decorative ware, sanitaryware, and in technology and industry such as electrical insulators and laboratory ware. In art history and archaeology, especially of ancient and prehistoric periods, pottery often means vessels only, and sculpted figurines of the same material are called terracottas.
Earthenware is glazed or unglazed nonvitreous pottery that has normally been fired below 1,200 °C (2,190 °F). Basic earthenware, often called terracotta, absorbs liquids such as water. However, earthenware can be made impervious to liquids by coating it with a ceramic glaze, and such a process is used for the great majority of modern domestic earthenware. The main other important types of pottery are porcelain, bone china, and stoneware, all fired at high enough temperatures to vitrify. End applications include tableware and decorative ware such as figurines.
Stoneware is a broad term for pottery fired at a relatively high temperature. A modern definition is a vitreous or semi-vitreous ceramic made primarily from stoneware clay or non-refractory fire clay. End applications include tableware, decorative ware such as vases.
Pottery and porcelain, is one of the oldest Japanese crafts and art forms, dating back to the Neolithic period. Kilns have produced earthenware, pottery, stoneware, glazed pottery, glazed stoneware, porcelain, and blue-and-white ware. Japan has an exceptionally long and successful history of ceramic production. Earthenwares were made as early as the Jōmon period, giving Japan one of the oldest ceramic traditions in the world. Japan is further distinguished by the unusual esteem that ceramics hold within its artistic tradition, owing to the enduring popularity of the tea ceremony.
Celadon is a term for pottery denoting both wares glazed in the jade green celadon color, also known as greenware or "green ware", and a type of transparent glaze, often with small cracks, that was first used on greenware, but later used on other porcelains. Celadon originated in China, though the term is purely European, and notable kilns such as the Longquan kiln in Zhejiang province are renowned for their celadon glazes. Celadon production later spread to other parts of East Asia, such as Japan and Korea as well as Southeast Asian countries, such as Thailand. Eventually, European potteries produced some pieces, but it was never a major element there. Finer pieces are in porcelain, but both the color and the glaze can be produced in stoneware and earthenware. Most of the earlier Longquan celadon is on the border of stoneware and porcelain, meeting the Chinese but not the European definitions of porcelain.
A saggar is a type of kiln furniture. It is a ceramic boxlike container used in the firing of pottery to enclose or protect ware being fired inside a kiln. The name may be a contraction of the word safeguard.
Korean ceramic history begins with the oldest earthenware from around 8000 BC. Throughout the history, the Korean peninsula has been home to lively, innovative, and sophisticated art making. Long periods of stability have allowed for the establishment of spiritual traditions, and artisan technologies specific to the region. Korean ceramics in Neolithic period have a unique geometric patterns of sunshine, or it is decorated with twists. In Southern part of Korea, Mumun pottery were popular. Mumun togi used specific minerals to make colors of red and black. Korean pottery developed a distinct style of its own, with its own shapes, such as the moon jar or Buncheong sagi which is a new form between earthenware and porcelain, white clay inlay celadon of Goryeo, and later styles like minimalism that represents Korean Joseon philosophers' idea. Many talented Korean potters were captured and brought to Japan during the invasions of Korea, where they heavily contributed to advancing Japanese pottery. Arita ware, founded by Yi Sam-pyeong opened a new era of porcelain in Japan. Another Japanese representative porcelain, Satsuma ware was also founded by Dang-gil Shim and Pyeong-ui Park. 14th generation of Su-kwan Shim have been using the same name to his grandfather and father to honor they are originally Korean, 14th Su-kwan Shim is honorable citizen of Namwon, Korea.
Ding ware, Ting ware or Dingyao are Chinese ceramics, mostly porcelain, that were produced in the prefecture of Dingzhou in Hebei in northern China. The main kilns were at Jiancicun or Jianci in Quyang County. They were produced between the Tang and Yuan dynasties of imperial China, though their finest period was in the 11th century, under the Northern Song. The kilns "were in almost constant operation from the early eighth until the mid-fourteenth century."
Chinese ceramics show a continuous development since pre-dynastic times and are one of the most significant forms of Chinese art and ceramics globally. The first pottery was made during the Palaeolithic era. Chinese ceramics range from construction materials such as bricks and tiles, to hand-built pottery vessels fired in bonfires or kilns, to the sophisticated Chinese porcelain wares made for the imperial court and for export. Porcelain was a Chinese invention and is so identified with China that it is still called "china" in everyday English usage.
Tin-glazing is the process of giving tin-glazed pottery items a ceramic glaze that is white, glossy and opaque, which is normally applied to red or buff earthenware. Tin-glaze is plain lead glaze with a small amount of tin oxide added. The opacity and whiteness of tin glaze encourage its frequent decoration. Historically this has mostly been done before the single firing, when the colours blend into the glaze, but since the 17th century also using overglaze enamels, with a light second firing, allowing a wider range of colours. Majolica, maiolica, delftware and faience are among the terms used for common types of tin-glazed pottery.
Ceramic glaze, or simply glaze, is a glassy coating on ceramics. It is used for decoration, to ensure the item is impermeable to liquids and to minimise the adherence of pollutants.
This is a list of pottery and ceramic terms.
Fritware, also known as stone-paste, is a type of pottery in which frit is added to clay to reduce its fusion temperature. The mixture may include quartz or other siliceous material. An organic compound such as gum or glue may be added for binding. The resulting mixture can be fired at a lower temperature than clay alone. A glaze is then applied on the surface.
Chinese influences on Islamic pottery cover a period starting from at least the 8th century CE to the 19th century. This influence of Chinese ceramics has to be viewed in the broader context of the considerable importance of Chinese culture on Islamic arts in general.
A bottle oven or bottle kiln is a type of kiln. The word 'bottle' refers to the shape of the structure and not to the kiln's products, which are usually pottery, not glass.
A potbank is a colloquial name for a pottery factory in North Staffordshire used to make bone china, earthenware and sanitaryware.
Ham Green Pottery was produced between 1100 AD to 1250 AD at a hamlet above the village of Pill called Ham Green in the English county of Somerset.
Ceramic art is art made from ceramic materials, including clay. It may take varied forms, including artistic pottery, including tableware, tiles, figurines and other sculpture. As one of the plastic arts, ceramic art is a visual art. While some ceramics are considered fine art, such as pottery or sculpture, most are considered to be decorative, industrial or applied art objects. Ceramic art can be created by one person or by a group, in a pottery or a ceramic factory with a group designing and manufacturing the artware.
Dick Lehman is an American ceramics artist based in Indiana. Dozens of articles and photos featuring his techniques and insights have appeared in periodicals and books on ceramic art since 1985, including 34 articles in U.S.-published Ceramics Monthly, the largest circulating magazine in the field, plus articles in 11 other international periodicals.
Kiln furniture are devices and implements inside furnaces used during the heating of manufactured individual pieces, such as pottery or other ceramic or metal components. Kiln furniture is made of refractory materials, i.e., materials that withstand high temperatures without deformation. Kiln furniture can account for up to 80% of the mass of a kiln charge.
