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Studio glass or glass sculpture is the modern use of glass as an artistic medium to produce sculptures or three-dimensional artworks. The glass objects created are intended to make a sculptural or decorative statement. On the market, their prices may range from a few hundred to tens of thousands of dollars (US). As a decorative and functional medium, glass was extensively developed in Egypt and Assyria. Invented by the Phoenicians, was brought to the fore by the Romans. In the Middle Ages, the builders of the great Norman and Gothic cathedrals of Europe took the art of glass to new heights with the use of stained glass windows as a major architectural and decorative element. Glass from Murano, in the Venetian Lagoon, (also known as Venetian glass) is the result of hundreds of years of refinement and invention. Murano is still held as the birthplace of modern glass art. The turn of the 19th Century was the height of the old art glass movement while the factory glass blowers were being replaced by mechanical bottle blowing and continuous window glass. Great ateliers like Tiffany, Lalique, Daum, Gallé, the Corning schools in upper New York state, and Steuben Glass Works took glass art to the highest levels. During the early 20th-century (before the early 1960s), contemporary glass art had mostly been glass made by teams of factory workers, taking glass from furnaces containing a thousand or more pounds of glass. This form of glass art, of which Tiffany and Steuben in the U.S., Gallé in France and Hoya Crystal in Japan, Royal Leerdam Crystal in the Netherlands and Orrefors and Kosta Boda in Sweden are perhaps the best known, grew out of the factory system in which all glass objects were hand or mold blown by teams of 4 or more people. Modern glass studios use a great variety of techniques in creating glass artworks, including working glass at room temperature cold working, stained glass, working glass in a torch flame (lampworking), glass beadmaking, glass casting, glass fusing, and, most notably, glass blowing. ==Glass in art== From the 19th century, various types of fancy glass started to become significant branches of the decorative arts. Cameo glass was revived for the first time since the Romans, initially mostly used for pieces in a neo-classical style. The Art Nouveau movement in particular made great use of glass, with René Lalique, Émile Gallé, and Daum of Nancy important names in the first French wave of the movement, producing colored vases and similar pieces, often in cameo glass, and also using lustre techniques. Louis Comfort Tiffany in America specialized in secular stained glass, mostly of plant subjects, both in panels and his famous lamps. From the 20th century, some glass artists began to class themselves as in effect sculptors working in glass, and as part of the fine arts. Several of the most common techniques for producing glass art include: blowing, kiln-casting, fusing, slumping, pate-de-verre, flame-working, hot-sculpting and cold-working. Cold work includes traditional stained glass work as well as other methods of shaping glass at room temperature. Glass can also be cut with a diamond saw, or copper wheels embedded with abrasives, and polished to give gleaming facets; the technique used in creating Waterford crystal.〔(【引用サイトリンク】url=http://www.waterfordvisitorcentre.com/ )〕 Art is sometimes etched into glass via the use of acid, caustic, or abrasive substances. Traditionally this was done after the glass was blown or cast. In the 1920s a new mould-etch process was invented, in which art was etched directly into the mould, so that each cast piece emerged from the mould with the image already on the surface of the glass. This reduced manufacturing costs and, combined with a wider use of colored glass, led to cheap glassware in the 1930s, which later became known as Depression glass.〔(【引用サイトリンク】url=http://www.glassonweb.com/articles/article/201/ )〕 As the types of acids used in this process are extremely hazardous, abrasive methods have gained popularity. ===Techniques used in modern studios=== Modern glass studios use a great variety of techniques in creating studio glass. The ancient technique of blown glass, where a glassblower works at a furnace full of molten glass using metal rods and hand tools to blow and shape almost any form of glass, is one of the more popular ways to work. Most large hollow pieces are made this way, and it allows the artist to be improvisational as they create their work. Another type is flame-worked glass, which uses torches and kilns in its production. The artist generally works at a bench using rods and tubes of glass, shaping with hand tools to create their work. Many forms can be achieved this way with little investment into money and space. Though the artist is somewhat limited in the size of the work that can be created, a great level of detail can be achieved with this technique. The paperweights by Paul Stankard are good examples of what can be achieved with flame-working techniques. In the 21st century, flame-worked glass became commonly used as adornments on functional items. The glass conductor's baton, commissioned by Chandler Bridges for Dr. Andre Thomas, is a clear example of flame-working being used to transform a traditional item into an artistic statement. Cast glass can be done at the furnace, at the torch or in a kiln. Generally the artist makes a mold out of refractory, sand, or plaster and silica which can be filled with either clear glass or colored or patterned glass, depending on the techniques and effects desired. Large scale sculpture is usually created this way. Slumped glass and fused glass is similar to cast glass, but it is not done at as high of a temperature. Usually the glass is only heated enough to impress a shape or a texture onto the piece, or to stick several pieces of glass together without a glue. The traditional technique of stained glass is still employed for the creation of studio glass. The artist cuts the glass into shapes and sets the pieces into lead cames which are soldered together. They artist can also use hot techniques in a kiln to create texture, patterns, or change the overall shape of the glass. Etched glass is created by dipping glass that has an acid resistant pattern applied to its surface into an acid solution. Also an artist can engrave it by hand using wheels. Sandblasting can create a similar effect. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「studio glass」の詳細全文を読む スポンサード リンク
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