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Grog, temper for clay. Grog, also known as firesand and chamotte, is a raw material usually made from crushed and ground potsherds, reintroduced into crude clay to temper it before making ceramic ware. It has a high percentage of silica and alumina. It is normally available as a powder or chippings, and is an important ingredient in Coade stone.
-- "The term pottery includes many varieties of ware from the crudest vessels of prehistoric times to the most beautiful decorated porcelains, stoneware and earthenware; it also includes many articles such as large grain-jars used in ancient times for storing corn and other dry materials, wine-jars and modern sanitaryware and the large tanks ...
Some clays used to make pottery do not require the addition of tempers. Pure kaolin clay does not require tempering. [6] Some clays are self-tempered, that is, naturally contain enough mica, sand, or sponge spicules that they do not require additional tempering.
Cord-marked pottery or Cordmarked pottery is an early form of a simple earthenware pottery. It allowed food to be stored and cooked over fire. It allowed food to be stored and cooked over fire. Cord-marked pottery varied slightly around the world, depending upon the clay and raw materials that were available.
The word ceramic comes from the Ancient Greek word κεραμικός (keramikós), meaning "of or for pottery" [4] (from κέραμος (kéramos) 'potter's clay, tile, pottery'). [5] The earliest known mention of the root ceram- is the Mycenaean Greek ke-ra-me-we , workers of ceramic, written in Linear B syllabic script. [ 6 ]
Most Groggs are 9 inches tall or less and are made of a type of clay called grog. Groggs are usually made of popular Welsh rugby players, [1] Welsh celebrities [2] and the occasional non-Welsh celebrity. [3] [4] Whenever possible the person who is "grogged" is presented with the first Grogg produced. [5]
In pottery, a potter's wheel is a machine used in the shaping (known as throwing) of clay into round ceramic ware. The wheel may also be used during the process of trimming excess clay from leather-hard dried ware that is stiff but malleable, and for applying incised decoration or rings of colour.
The word "ceramics" comes from the Greek keramikos (κεραμεικός), meaning "pottery", which in turn comes from keramos (κέραμος) meaning "potter's clay". [3] Most traditional ceramic products were made from clay (or clay mixed with other materials), shaped and subjected to heat, and tableware and decorative ceramics are generally ...