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Fill materials are used to fill in missing parts or breaks in a ceramic piece in order to stabilize the piece. A wide range of materials and techniques have been used to restore losses in ceramics. Today the most common filling materials are made from calcium-sulphate-based fillers or synthetic resins such as epoxy, acrylic, or polyester resin.
These variations affect the color of the clay before and after firing. Iron is the most common material found in clay, and can add red, grey, or buff coloring to the object. [ 5 ] Pottery can be coarse wares, which are undecorated or only minimally decorated utilitarian vessels, or fine wares, which are decorated, finely potted, and used for a ...
In ceramics, craquelure in ceramic glazes, where it is often a desired effect, is called "crackle"; it is a characteristic of Chinese Ge ware in particular. This is usually differentiated from crazing , which is a glaze defect in firing, or the result of aging or damage.
Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between 750 and 850 °C (1,380 and 1,560 °F). The powder melts, flows, and then hardens to a smooth, durable vitreous coating.
The colours applied on top of the glaze blended into it during firing (the technique thereby differing from underglaze painting used with transparent glazes). [24] The disadvantage was that only a narrow group of pigments produced good colours after firing at the relatively high temperatures of up to 1000 °C.
For the duration of the china painting craze, between about 1880 and 1920, many books on pottery making, focusing on painting, were published for the amateur in England and America, for example, A Handbook to the Practice of Pottery Painting by John Charles Lewis Sparkes, Headmaster of the National Art Training School and director of the ...
Overglaze colors are low-temperature glazes that give ceramics a more decorative, glassy look. A piece is fired first, this initial firing being called the glost firing, then the overglaze decoration is applied, and it is fired again. Once the piece is fired and comes out of the kiln, its texture is smoother due to the glaze.
Overglaze decoration, overglaze enamelling, or on-glaze decoration, is a method of decorating pottery, most often porcelain, where the coloured decoration is applied on top of the already fired and glazed surface, and then fixed in a second firing at a relatively low temperature, often in a muffle kiln. It is often described as producing ...
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