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Slip Casting
Slip casting, or slipcasting, is a ceramic forming technique for pottery and other ceramics, especially for shapes not easily made on a wheel. In this method, a liquid clay body slip (usually mixed in a blunger) is poured into plaster moulds and allowed to form a layer, the cast, on the inside walls of the mould. The process usually takes at least 24 hours per piece. It gives very precise and consistent shapes, and is now the most common technique used for commercial mass-produced pottery, although it began in Europe as a technique for fine wares such as porcelain by the 1750s. The type of clay body suited for slip casting differs from that for throwing. It is essential to make a good quality casting slip to get an intended result. The behavior of the slip will depend on multiple factors, including the types and proportions of water, clay, other chemicals, and deflocculant used; temperature, humidity and other local conditions; and the amount of energy involved in mixing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sèvres - Petit Coulage - Supports De Cuisson 073
Sèvres (, ) is a commune in the southwestern suburbs of Paris, France. It is located from the centre of Paris, in the Hauts-de-Seine department, Île-de-France region. The commune, which had a population of 23,251 as of 2018, is known for its famous porcelain production at the ''Manufacture nationale de Sèvres'', which was also where the Treaty of Sèvres (1920) was signed. Geography Situation Sèvres is a commune in the western suburbs of Paris, to the southwest of the centre of Paris, with an eastern edge by the river Seine. The commune borders Île Seguin, an island in the Seine, in the commune of Boulogne-Billancourt, adjoining Sèvres. File:Map commune FR insee code 92072.png, Map of the commune File:Sèvres map.svg, View of the commune of Sèvres in red on the map of Paris and the "Petite Couronne" File:SEVRES - L'Embarcadaire.jpg, Banks of the Seine in the early 20th century. At that time, the river was an important transportation axis; river shuttles can be see ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teapot
A teapot is a vessel used for steeping tea leaves or a herbal mix in boiling or near-boiling water, and for serving the resulting infusion which is called tea. It is one of the core components of teaware. Dry tea is available either in tea bags or as loose tea, in which case a tea infuser or tea strainer may be of some assistance, either to hold the leaves as they steep or to catch the leaves inside the teapot when the tea is poured. Teapots usually have an opening with a lid at their top, where the dry tea and hot water are added, a handle for holding by hand and a spout through which the tea is served. Some teapots have a strainer built-in on the inner edge of the spout. A small air hole in the lid is often created to stop the spout from dripping and splashing when tea is poured. In modern times, a thermally insulating cover called a tea cosy may be used to enhance the steeping process or to prevent the contents of the teapot from cooling too rapidly. History China ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbotine
Barbotine is the French for ceramic slip, or a mixture of clay and water used for moulding or decorating pottery. In English the term is used for three different techniques of decorating pottery, though in all cases mainly for historical works. For clarity, these types are numbered here as A-C (which are not standard terms). A: Piped slip decoration In the first, common from the Ancient World onwards, the barbotine is piped onto the object rather as cakes are decorated with icing, using a quill, horn, or other kind of nozzle. 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. The first barbotine technique in pottery styling was in use in the ancient world. The Egyptians were known to have use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slipware
Slipware is pottery identified by its primary decorating process where slip is placed onto the leather-hard (semi-hardened) clay body surface before firing by dipping, painting or splashing. Slip is an aqueous suspension of a clay body, which is a mixture of clays and other minerals such as quartz, feldspar and mica. The slip placed onto a wet or leather-hard clay body surface by a variety of techniques including dipping, painting, piping or splashing. Slipware is the pottery on which slip has been applied either for glazing or decoration. Slip is liquified clay or clay slurry, with no fixed ratio of water and clay, which is used either for joining pottery pieces together by slip casting with mould, glazing or decorating the pottery by painting or dipping the pottery with slip.What is slip in pottery thepotterywheel.com, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium Silicate
Sodium silicate is a generic name for chemical compounds with the formula or ·, such as sodium metasilicate , sodium orthosilicate , and sodium pyrosilicate . The anions are often polymeric. These compounds are generally colorless transparent solids or white powders, and soluble in water in various amounts. Sodium silicate is also the technical and common name for a mixture of such compounds, chiefly the metasilicate, also called waterglass, water glass, or liquid glass. The product has a wide variety of uses, including the formulation of cements, passive fire protection, textile and lumber processing, manufacture of refractory ceramics, as adhesives, and in the production of silica gel. The commercial product, available in water solution or in solid form, is often greenish or blue owing to the presence of iron-containing impurities. In industry, the various grades of sodium silicate are characterized by their SiO2:Na2O weight ratio (which can be converted to molar ratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laminates
Lamination is the technique/process of manufacturing a material in multiple layers, so that the composite material achieves improved strength, stability, sound insulation, appearance, or other properties from the use of the differing materials, such as plastic. A laminate is a permanently assembled object created using heat, pressure, welding, or adhesives. Various coating machines, machine presses and calendering equipment are used. Materials There are different lamination processes, depending primarily on the type or types of materials to be laminated. The materials used in laminates can be identical or different, depending on the process and the object to be laminated. Textile Laminated fabric are widely used in different fields of human activity, including medical and military. Woven fabrics (organic and inorganic based) are usually laminated by different chemical polymers to give them useful properties like chemical resistance, dust, grease, windproofness, photolumines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceramic
A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain, and brick. The earliest ceramics made by humans were pottery objects (''pots,'' ''vessels or vases'') or figurines made from clay, either by itself or mixed with other materials like silica, hardened and sintered in fire. Later, ceramics were glazed and fired to create smooth, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings on top of the crystalline ceramic substrates. Ceramics now include domestic, industrial and building products, as well as a wide range of materials developed for use in advanced ceramic engineering, such as in semiconductors. The word "'' ceramic''" comes from the Greek word (), "of pottery" or "for pottery", from (), "potter's clay, tile, pottery". The earliest kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiln
A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay into pottery, tiles and bricks. Various industries use rotary kilns for pyroprocessing—to calcinate ores, to calcinate limestone to lime for cement, and to transform many other materials. Pronunciation and etymology According to the Oxford English Dictionary, kiln was derived from the words cyline, cylene, cyln(e) in Old English, in turn derived from Latin ''culina'' ("kitchen"). In Middle English the word is attested as kulne, kyllne, kilne, kiln, kylle, kyll, kil, kill, keele, kiele. For over 600 years, the final "n" in kiln was silent. It wasn't until the late 20th century where the "n" began to be pronounced. This is due to a phenomenon known as spelling pronunciation, where the pronunciation of a word is surmised from its spelling an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leather-hard
In pottery, leather-hard is the condition of a clay or clay body when it has been partially dried to the point where all shrinkage has been completed, and it has a consistency similar to leather of the same thickness as the clay. At this stage, the clay object has approximately 15% moisture content. The clay is still visibly damp (normally a darkish grey, if it began whiteish) but has dried enough to be able to be handled without deformation. The body is able to be gouged or incised without breaking. The leather-hard stage is the easiest place to add on extension material that cannot be dried with the rest of the pot without causing some issues to occur. For instance, in some cases when handles are added before the base and sides have been dried, the handle can dry before the sides do and cause cracking, as the weight of the dried portion is no longer at the same equivalence with the wet side. The same goes for other additions to the pot that will not dry at the same rate as the re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sèvres - Petit Coulage - Démoulage 21
Sèvres (, ) is a commune in the southwestern suburbs of Paris, France. It is located from the centre of Paris, in the Hauts-de-Seine department, Île-de-France region. The commune, which had a population of 23,251 as of 2018, is known for its famous porcelain production at the ''Manufacture nationale de Sèvres'', which was also where the Treaty of Sèvres (1920) was signed. Geography Situation Sèvres is a commune in the western suburbs of Paris, to the southwest of the centre of Paris, with an eastern edge by the river Seine. The commune borders Île Seguin, an island in the Seine, in the commune of Boulogne-Billancourt, adjoining Sèvres. File:Map commune FR insee code 92072.png, Map of the commune File:Sèvres map.svg, View of the commune of Sèvres in red on the map of Paris and the "Petite Couronne" File:SEVRES - L'Embarcadaire.jpg, Banks of the Seine in the early 20th century. At that time, the river was an important transportation axis; river shuttles can be seen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gladstone Mould Making Tea Pot 3839
William Ewart Gladstone ( ; 29 December 1809 – 19 May 1898) was a British statesman and Liberal politician. In a career lasting over 60 years, he served for 12 years as Prime Minister of the United Kingdom, spread over four non-consecutive terms (the most of any British prime minister) beginning in 1868 and ending in 1894. He also served as Chancellor of the Exchequer four times, serving over 12 years. Gladstone was born in Liverpool to Scottish parents. He first entered the House of Commons in 1832, beginning his political career as a High Tory, a grouping which became the Conservative Party under Robert Peel in 1834. Gladstone served as a minister in both of Peel's governments, and in 1846 joined the breakaway Peelite faction, which eventually merged into the new Liberal Party in 1859. He was chancellor under Lord Aberdeen (1852–1855), Lord Palmerston (1859–1865) and Lord Russell (1865–1866). Gladstone's own political doctrine—which emphasised equality of o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Gravity
Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water (molecule), water at its densest (at ); for gases, the reference is air at room temperature (). The term "relative density" (often abbreviated r.d. or RD) is often preferred in scientific usage, whereas the term "specific gravity" is deprecation, deprecated. If a substance's relative density is less than 1 then it is less dense than the reference; if greater than 1 then it is denser than the reference. If the relative density is exactly 1 then the densities are equal; that is, equal volumes of the two substances have the same mass. If the reference material is water, then a substance with a relative density (or specific gravity) less than 1 will float in water. For example, an ice cube, with a relative density of about 0.91, will float. A substance wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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