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A blunger usually consists of a round or octagonal tank with a mixer. Clay is added to the water-filled blunger and then mixed into a slurry, which is also called slip. The electrical charge of the clay particles is neutralized by the addition of a deflocculant, which assists in keeping the particles in suspension. This slip can be then sieved ...
African red slip ware: moulded Mithras slaying the bull, 400 ± 50 AD.. A slip is a clay slurry used to produce pottery and other ceramic wares. [1] Liquified clay, in which there is no fixed ratio of water and clay, is called slip or clay slurry which is used either for joining leather-hard (semi-hardened) clay body (pieces of pottery) together by slipcasting with mould, glazing or decorating ...
In pottery these are used to produce plastic clay body from a slip. Invariably the output from a press, called filter cakes, are then fed into pugs for de-airing and extrusion. Fine Fireclay A semi-vitreous ceramic used for very large pieces of sanitaryware. Despite the name most formulations do not use fireclay, but all use some chamotte.
Chinese pottery also used techniques where patterns, images or calligraphy were created as part-dried slip was cut away to reveal a lower layer of slip or the main clay body in a contrasting colour. The latter of these is called the "cut-glaze" technique. [8] Slipware may be carved or burnished to change the surface appearance of the ware.
There are many forming techniques to make ceramics, but one example is slip casting.This is where slip or, liquid clay, is poured into a plaster mould. The water in the slip is drawn out into the walls of the plaster mould, leaving an inside layer of solid clay, which hardens quickly.
The slip would normally be in a contrasting colour to the rest of the vessel, and forms a pattern, or inscription, that is slightly raised above the main surface. This is normally called slip-trailing in English today, and for English pottery (such as the works of Thomas Toft, d. 1698), but "barbotine" remains common in archaeology.
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Tang dynasty tomb figure, sancai horse, 7–8th century, also using blue, as on the saddle. Sancai (Chinese: 三 彩; pinyin: sāncǎi; lit. 'three colours') [1] is a versatile type of decoration on Chinese pottery and other painted pieces using glazes or slip, predominantly in the three colours of brown (or amber), green, and a creamy off-white.