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Steel Engraving
Steel engraving is a technique for printing illustrations based on steel instead of copper. It has been rarely used in artistic printmaking, although it was much used for reproductions in the 19th century. Steel engraving was introduced in 1792 by Jacob Perkins (1766–1849), an American inventor, for banknote printing. When Perkins moved to London in 1818, the technique was adapted in 1820 by Charles Warren and especially by Charles Heath (1785–1848) for Thomas Campbell's ''Pleasures of Hope'', which contained the first published plates engraved on steel. The new technique only partially replaced the other commercial techniques of that time such as wood engraving, copper engraving and later lithography. Process Confusingly, the printmaking technique used in steel engravings is, after the earliest years in the 1820s, normally a combination of etching and true engraving, with etching becoming dominant in later examples, after the technique became popular again in the 1830s. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burin (engraving)
A burin ( ) is a steel cutting tool used in engraving, from the French ''burin'' (cold chisel). Its older English name and synonym is graver. Etymology The term ''burin'' refers to a tool used by engravers that has a thin, pointed blade and it used to etch or cut. The first known use of the word dates back to France in the mid-1600s when the term was coined for the tool we know today. Design The burin consists of a rounded handle shaped like a mushroom, and a tempered steel shaft, coming from the handle at an angle, and ending in a very sharp cutting face. The most ubiquitous types have a square or lozenge face, a high-end repertoire has many others. A tint burin consists of a square face with teeth, to create many fine, closely spaced lines. A stipple tool allows for the creation of fine dots. A flat burin consists of a rectangular face, and is used for cutting away large portions of material at a time. The earliest uses of a burin come from the Lower Paleolithic era, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bamber Gascoigne
Arthur Bamber Gascoigne (24 January 1935 – 8 February 2022) was an English television presenter and author. He was the original quizmaster on ''University Challenge'', which initially ran from 1962 to 1987. Early life and education Gascoigne was born in London on 24 January 1935. He was the elder son of Lieutenant-Colonel Derek Ernest Frederick Orby Gascoigne by his marriage in 1934 to Mary ("Midi") Louisa Hermione O'Neill. Gascoigne was educated at Sunningdale School in Berkshire before winning scholarships to both Eton College and Magdalene College, Cambridge (1955), where he read English literature. He initially wanted to become an actor, though found it tiresome to have to play the same part for more than a week, so instead turned to writing. While at Magdalene, he initially submitted scripts to the Footlights sketch troupe, though they were never performed. However, he wrote a college review in his second year, which was seen by the producer Michael Codron. He li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Line Engraving
Line engraving is a term for engraved images printed on paper to be used as prints or illustrations. The term is mainly used in connection with 18th- or 19th-century commercial illustrations for magazines and books or reproductions of paintings. It is not a technical term in printmaking, and can cover a variety of techniques, giving similar results. Steel engraving is an overlapping term, for images that in fact are often mainly in etching, mostly used for banknotes, illustrations for books, magazines and decorative prints, often reproductive, from about 1820 to the early 20th century, when the technique became less used. ''Copperplate engraving'' is another somewhat outdated term for engravings. With photography long established, engravings made today are nearly all artistic ones in printmaking, but the technique is not as common as it used to be; more than other printmaking techniques, engraving requires great skill and much practice, even for an experienced artist. Techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engraving
Engraving is the practice of incising a design onto a hard, usually flat surface by cutting grooves into it with a burin. The result may be a decorated object in itself, as when silver, gold, steel, or glass are engraved, or may provide an intaglio printing plate, of copper or another metal, for printing images on paper as prints or illustrations; these images are also called "engravings". Engraving is one of the oldest and most important techniques in printmaking. Wood engraving is a form of relief printing and is not covered in this article, same with rock engravings like petroglyphs. Engraving was a historically important method of producing images on paper in artistic printmaking, in mapmaking, and also for commercial reproductions and illustrations for books and magazines. It has long been replaced by various photographic processes in its commercial applications and, partly because of the difficulty of learning the technique, is much less common in printmaking, wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geometric Lathe
A geometric lathe was used for making ornamental patterns on the plates used in printing bank notes and postage stamps. It is sometimes called a guilloché lathe. It was developed early in the nineteenth century when efforts were introduced to combat forgery, and is an adaptation of an ornamental turning lathe. The lathe was able to generate intersecting and interlacing patterns of fine lines in various shapes, which were almost impossible to forge by hand-engraving. They were used by many national mints. Further reading *Peter Bower, 'Economic warfare: Banknote Forgery as a deliberate weapon', and Maureen Greenland, 'Compound plate printing and nineteenth-century bank notes, in Virginia Hewitt, ed. ''The Banker's Art: Studies in paper money'', pp 46–63, and pp 84–87, The British Museum Press, 1995, () See also * Security printing * Spirograph * Tusi couple * Guilloché Guilloché (; or guilloche) is a decorative technique in which a very precise, intricate and rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopædia Britannica Eleventh Edition
The ''Encyclopædia Britannica'' Eleventh Edition (1910–1911) is a 29-volume reference work, an edition of the '' Encyclopædia Britannica''. It was developed during the encyclopaedia's transition from a British to an American publication. Some of its articles were written by the best-known scholars of the time. This edition of the encyclopaedia, containing 40,000 entries, has entered the public domain and is easily available on the Internet. Its use in modern scholarship and as a reliable source has been deemed problematic due to the outdated nature of some of its content. Modern scholars have deemed some articles as cultural artifacts of the 19th and early 20th centuries. Background The 1911 eleventh edition was assembled with the management of American publisher Horace Everett Hooper. Hugh Chisholm, who had edited the previous edition, was appointed editor in chief, with Walter Alison Phillips as his principal assistant editor. Originally, Hooper bought the rights t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intaglio Printing
Intaglio ( ; ) is the family of printing and printmaking techniques in which the image is incised into a surface and the incised line or sunken area holds the ink. It is the direct opposite of a relief print where the parts of the matrix that make the image stand ''above'' the main surface. Normally, copper or in recent times zinc sheets, called plates, are used as a surface or matrix, and the incisions are created by etching, engraving, drypoint, aquatint or mezzotint, often in combination. Collagraphs may also be printed as intaglio plates. After the decline of the main relief technique of woodcut around 1550, the intaglio techniques dominated both artistic printmaking as well as most types of illustration and popular prints until the mid 19th century. Process In intaglio printing, the lines to be printed are cut into a metal (e.g. copper) plate by means either of a cutting tool called a burin, held in the hand – in which case the process is called ''engraving''; or t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel-facing
The etching revival was the re-emergence and invigoration of etching as an original form of printmaking during the period approximately from 1850 to 1930. The main centres were France, Britain and the United States, but other countries, such as the Netherlands, also participated. A strong collector's market developed, with the most sought-after artists achieving very high prices. This came to an abrupt end after the 1929 Wall Street crash wrecked what had become a very strong market among collectors, at a time when the typical style of the movement, still based on 19th-century developments, was becoming outdated. According to Bamber Gascoigne, the "most visible characteristic of he movement.. was an obsession with surface tone", created by deliberately not wiping all the ink off the surface of the printing plate, so that parts of the image have a light tone from the film of ink left. This and other characteristics reflected the influence of Rembrandt, whose reputation had by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electroplating
Electroplating, also known as electrochemical deposition or electrodeposition, is a process for producing a metal coating on a solid substrate through the reduction of cations of that metal by means of a direct electric current. The part to be coated acts as the cathode (negative electrode) of an electrolytic cell; the electrolyte is a solution of a salt of the metal to be coated; and the anode (positive electrode) is usually either a block of that metal, or of some inert conductive material. The current is provided by an external power supply. Electroplating is widely used in industry and decorative arts to improve the surface qualities of objects—such as resistance to abrasion and corrosion, lubricity, reflectivity, electrical conductivity, or appearance. It is used to build up thickness on undersized or worn-out parts, or to manufacture metal plates with complex shape, a process called electroforming. It is used to deposit copper and other conductors in forming pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Case Hardening
Case-hardening or surface hardening is the process of hardening the surface of a metal object while allowing the metal deeper underneath to remain soft, thus forming a thin layer of harder metal at the surface. For iron or steel with low carbon content, which has poor to no hardenability of its own, the case-hardening process involves infusing additional carbon or nitrogen into the surface layer. Case-hardening is usually done after the part has been formed into its final shape, but can also be done to increase the hardening element content of bars to be used in a pattern welding or similar process. The term face hardening is also used to describe this technique, when discussing modern armour. Hardening is desirable for metal components that are subject to sliding contact with hard or abrasive materials, as the hardened metal is more resistant to surface wear. However, because hardened metal is usually more brittle than softer metal, through-hardening (that is, hardening the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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