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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 difference between Swedish grog and long drinks, mixed drinks, or punches is the number of ingredients. The number of ingredients in drinks may vary, but grog typically has just one kind of liquor (most commonly vodka or brännvin, but others like rum, whisky, cognac, or eau de vie are also used), and one kind of a non-alcoholic beverage ...
Prehistoric humans discovered the useful properties of clay and used it for making pottery. Some of the earliest pottery shards have been dated to around 14,000 BCE, [7] and clay tablets were the first known writing medium. [8] Clay is used in many modern industrial processes, such as paper making, cement production, and chemical filtering ...
A group of hydrous aluminium phyllosilicate minerals. Often also used to refer to the clay body, which sometimes may only contain small amounts of clay minerals. Clay body The material used to form an article of pottery. Thus a potter might prepare, or order from a supplier, such an amount of earthenware body, stoneware body or porcelain body ...
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]
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.
Fire clay in a furnace. Fire clay is a range of refractory clays used in the manufacture of ceramics, especially fire brick. The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of aluminium (Al 2 O 3 ·2SiO 2 ·2H 2 O) with or without free silica." [1]
PMC works drying on a mug warmer. PMC was developed in the early 1990s in Japan by metallurgist Masaki Morikawa. [3] As a solid-phase sintered product of a precious metal powder used to form a precious metal article, [1] the material consists of microscopic particles of pure silver or fine gold and a water-soluble, non-toxic, organic binder that burns off during firing.