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Niello / n iː ˈ ɛ l oʊ / [1] [2] is a black mixture, usually of sulphur, copper, silver, and lead, [3] used as an inlay on engraved or etched metal, especially silver. It is added as a powder or paste, then fired until it melts or at least softens, and flows or is pushed into the engraved lines in the metal.
Engraving is done with a burin, which is a small bar of hardened steel with a sharp point. It is pushed along the plate to produce thin furrowed lines, leaving "burr" or strips of waste metal to the side. This is followed by the use of a scraper to remove any burs, since they would be an impediment during the subsequent inking process.
The process starts with an engraved metal printing plate similar to those used for making engravings or etchings on paper. The plate is used to print the pattern on tissue paper, using mixes of special pigments that stand up to firing as the "ink". The transfer is then put pigment-side down onto the piece of pottery, so that the sticky ink ...
Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...
Whereas name tags tend to be worn on uniforms or clothing, nameplates tend to be mounted onto an object (e.g. cars, amplification devices) or physical space (e.g. doors, walls, or desktops). Nameplates are also distinct from name plaques. Plaques have larger dimensions and aim to communicate more information than a name and title.
An engraved plate from which visiting cards are printed is a good example of some elementary principles of engraving. It contains thin lines and thick ones, as well as a considerable variety of curves. An elaborate line engraving, if it is a pure line engraving and nothing else, will contain only these simple elements in different combinations.
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