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The process of burnishing pottery happens when the clay is in a “leather-hard” state. Leather-hard clay is partially dried clay that is in-between being malleable and being brittle. [2] It is important to wet the piece before burnishing because scratch marks will be present on the surface if the clay is too dry. [2]
Black Burnished Ware Category 2 (BB2) is greyer in color and has a finer texture when compared with BB1. [4] It is a “hard, sandy fabric, varying in colour from dark-grey or black with a brown or reddish brown core and a reddish-brown, blue-grey, black or lighter ('pearly grey') surface.” [5] The clay body can contain black iron ore, mica, and quartz, all in a matrix of sediment. [5]
Another aspect that can be added to a leather-hard state a process referred to as burnishing. This is produced when a hard object, often a highly polished stone or glass, is rubbed on the surface of a leather-hard vessel. Burnishing smooths all the clay particles into facing the same direction, allowing light to reflect off them. [8]
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 (plural potteries ).
Horse hair vase. Horse hair raku is a method of decorating pottery through the application of horsehair and other dry carbonaceous material to the heated ware. The burning carbonaceous material creates smoke patterns and carbon trails on the surface of the heated ware that remain as decoration after the ware cools.
Another few surface treatments used through Hakra Ware culture is the application of a particular mixture and use of black burnish. The mixture applied on the surface of the pottery consisted of a thick layer of a liquid mud paste and broken bits of pottery shards. [7] [9] [6] While black burnish is used in 2 forms. One is glossy and black in ...
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
This process caused the fabric of the clay to change color from its natural red to black. Thus, in contrast to the black- glazed Campanian ware of the Greek colonists in southern Italy , the lustrous , shiny, black surface of many bucchero pots was achieved by diligent burnishing (polishing) or, occasionally, through the application of a thin ...
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