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Any material that can be shaped in three dimensions can be used sculpturally. Certain materials, by virtue of their structural and aesthetic properties and their availability, have proved especially suitable. The most important of these are stone, wood, metal, clay, ivory, and plaster. There are also a number of materials of secondary importance and many that have Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit recently come into use.
Throughout history, stone has been the principal material of monumental sculpture. There are practical reasons for this: many types of stone are highly resistant to the weather and therefore suitable for external use; stone is available in all parts of the world and can be obtained in large blocks; many stones have a fairly homogeneous texture and a uniform hardness that make them suitable for carving; stone has been the chief material used for Treasure Untold - Buddy Guy - Buddy Guy monumental architecture with which so much sculpture has been associated.
Stones belonging to all three main categories of rock formation have been used in sculpture. These are some of the hardest stones used for sculpture. Sedimentary rockswhich include sandstones and limestonesare formed from accumulated deposits of mineral and organic substances. Sandstones are agglomerations of particles of eroded stone held together by a cementing substance. Limestones are formed chiefly from the calcareous remains of organisms. Alabaster gypsumalso a sedimentary rockis a chemical deposit.
Many varieties of sandstone and limestonewhich vary greatly in quality and suitability for carving, are used for sculpture. Because of their method of formation, many sedimentary rocks have pronounced strata and are rich in fossils. Metamorphic rocks result from changes brought about in the structure of sedimentary and igneous rocks Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit extreme pressure or heat.
The most well-known metamorphic rocks used in sculpture are the marbleswhich are recrystallized limestones. Italian Carrara marblethe best known, was used by Roman and Renaissance sculptors, especially Michelangeloand is still widely used.
The best-known varieties used by Greek sculptors, with whom marble was Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit popular than any other stone, are Pentelic —from which the Parthenon and its sculpture are made—and Parian.
Because stone is extremely heavy and lacks tensile strengthit is easily fractured if carved too thinly and not properly supported. A massive treatment without vulnerable projections, as in Egyptian and pre-Columbian American Indian sculpture, is therefore usually preferred. Some stones, however, can be treated more freely and openly; marble in particular has been treated by some European sculptors with almost the same freedom as bronze, but such displays of virtuosity are achieved Over There - Nature Living - There Is Still Some Hope overcoming rather than submitting to the properties of the material itself.
The colours and textures of stone are among its most delightful properties. Some stones are fine-grained and can be carved with delicate detail and finished with Young London - Instincts high polish; others are coarse-grained and demand a broader treatment.
Pure white Carrara marble, which has a translucent quality, seems to glow and responds to light in a delicate, subtle manner. Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit properties of marble were brilliantly exploited by 15th-century Italian sculptors such as Donatello and Desiderio da Settignano.
The colouring of granite is not uniform but has a salt-and-pepper quality and may glint with mica and quartz crystals. It may be predominantly black or white or a variety of grays, pinks, and reds. Sandstones vary in texture and are often warmly coloured in a range of buffs, pinks, and reds.
Limestones vary greatly in colour, and the presence of fossils may add to the interest of their surfaces. A number of stones are richly variegated in colour by the irregular veining that runs through them. Hardstonesor semiprecious stones, constitute a special group, which includes some of the most beautiful and decorative of all substances. The working of these stones, along with the working of more precious gemstones, is usually considered as part of the glyptic gem carving or engravingor lapidary, arts, but many artifacts produced from them can be considered small-scale sculpture.
They are Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit harder to work than steel. First among the hardstones used for sculpture is jadewhich was venerated by the ancient Chinesewho worked it, together with other hardstones, with extreme skill.
It was also used sculpturally by Maya and Mexican artists. Other important hardstones are rock crystalrose quartzamethyst, Total Eclipse - The Alan Parsons Project - I Robotand jasper.
The principal material of tribal sculpture in Africa, Oceaniaand Finders Fuckers - Isa & The Filthy Tongues* - Dark Passenger Americawood has also been used by every great civilization; it was used extensively during the Middle Ages, for example, especially in Germany and central Europe.
Both hardwoods and softwoods are used for sculpture. Some are close-grained, and they cut like Young Gods - Prayers - Young Gods others are open-grained and stringy. The fibrous structure of wood gives it considerable tensile strength, so that it may be carved thinly and with greater freedom than stone. For large or complex open compositionsa number of pieces of wood may be jointed.
Wood is used mainly for indoor sculpture, for it is not as tough or durable as stone; changes of humidity and temperature may cause Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit to split, and it is subject to attack by insects and fungus. The Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit of wood is one of its most attractive features, giving variety of pattern and texture to its surfaces.
Its colours, too, are subtle and varied. In general, wood has a warmth that stone does not have, but it lacks the massive dignity and weight of stone. The principal woods for sculpture are oakmahogany, limewood, walnut, elm, pine, cedar, boxwood, pear, and ebony; but many others are also used. The sizes of wood available are limited by the sizes of trees; North American Indians, for example, could carve gigantic totem poles Jupiter, The Bringer Of Jollity - Holst* - The London Philharmonic Orchestra Conducted By Sir Adrian pine, but boxwood is available only in small pieces.
In the 20th century, wood was used by many sculptors as a medium for construction as well as for carving. Laminated timbers, chipboards, and timber in block and plank form can be glued, jointed, screwed, or bolted together, and given a variety of finishes. Wherever metal technologies have been developed, metals have been used for sculpture.
The amount of metal sculpture that has survived from the ancient world does not properly reflect the extent to which it was used, for vast quantities have been plundered and melted down.
Countless Far Eastern and Greek metal sculptures have been lost in this way, as has almost all the goldwork of pre-Columbian American Indians. The metal most used for sculpture is bronzewhich is basically an alloy of copper and tin; but gold, silveraluminum, copper, brass, lead, and iron have also been widely used.
Most metals are extremely strong, hard, and durable, with a tensile strength that To Speak - Dome - 1-4+5 a much greater freedom of design than is possible in either stone or wood. A life-size bronze figure that is firmly attached to a base needs no support other than its own feet and may even be poised on one foot.
Considerable attenuation of form is also possible without risk of fracture. The colour, brilliant lustre, and reflectivity of metal surfaces have been highly valued and made full use of in sculpture although, since the Renaissance, artificial patinas have generally been preferred as finishes for bronze. Metals can be worked in a variety of ways in order to produce sculpture. Gold was used to great effect for small-scale works in pre-Columbian America and medieval Europe.
A fairly recent discovery, aluminum has been used a great deal by modern sculptors. Iron has not been used much as a casting material, but in recent years it has become a popular material for direct working by techniques similar to those of the blacksmith. Sheet metal is one of the principal materials used nowadays for constructional sculpture. Stainless steel in sheet form has been used effectively by the American sculptor David Smith.
Clay is one of the most common and easily obtainable of all materials. Sculptors use clay as a material for working out ideas; for preliminary models that are subsequently cast in such materials as plaster, metal, and concrete or carved in stone; and for pottery sculpture. Depending on the nature of the clay body itself and the temperature at which it is fired, a finished pottery product is said to be earthenwarewhich is opaquerelatively soft, and porous; stonewarewhich is hard, nonporous, and more or less vitrified; or porcelainwhich is fine-textured, vitrified, and translucent.
All three types of pottery are used for Interference - Wizard Lizard - Forces Of Creation. Sculpture made in low-fired clays, particularly buff and red clays, is known as terra-cotta baked earth.
This term is used inconsistently, however, and is often extended to cover all forms of pottery sculpture. Unglazed clay bodies can be smooth or coarse in texture and may be coloured white, gray, buff, brown, pink, or red. Pottery sculpture can be decorated with any of the techniques invented by potters and coated with a variety of beautiful glazes.
Paleolithic sculptors produced relief and in-the-round work in unfired clay. The ancient Chineseparticularly during the Tang — and Song — dynastiesmade superb pottery sculpture, including large-scale human figures. The best-known Greek works are the intimate small-scale figures and groups from Tanagra. Mexican and Maya sculptor-potters produced vigorous, directly modeled figures. During the Renaissance, pottery was used in Italy for major sculptural projects, including the large-scale glazed and coloured sculptures of Luca della Robbia and his family, which are among the finest works in the medium.
The main source of ivory is elephant tusks ; but walrus, hippopotamus, narwhal an Arctic aquatic animaland, in Paleolithic times, mammoth tusks also were used for sculpture. Ivory is dense, hard, and difficult to work. Its colour is creamy white, which usually yellows with age; and it will take a high polish. A tusk may be sawed into panels for relief carving or The Andrews Sisters - Rarities blocks for carving in the round; or the shape of the tusk itself may be used.
The physical properties of the material invite the most delicate, detailed carving, and displays of virtuosity are common. Ivory was used extensively in antiquity in the Middle and Far East and the Mediterranean.
An almost unbroken Christian tradition of ivory carving reaches from Rome and Byzantium to the end of the Middle Ages. Throughout this time, ivory was used mainly in relief, often in conjunction with precious metals, enamels, and precious stones to produce the most splendid effects.
Some of its main sculptural uses were for devotional diptychs, portable altars, book covers, retables raised shelves above altarscaskets, and crucifixes. The Baroque periodtoo, is rich in ivories, especially in Germany.
A fine tradition of ivory carving also existed in Benin, a former kingdom of West Africa. Related to ivory, horn and bone have been used since Paleolithic times for small-scale sculpture. Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit of paris sulfate of lime is especially useful for the production of molds, casts, and preliminary models. When mixed with water, plaster will in a short time recrystallize, or set—that is, become hard and inert—and its volume will increase slightly.
When set, it is relatively fragile and lacking in character and is therefore of limited use for finished work. Plaster can be poured as a liquid, modeled directly when of a suitable consistency, or easily carved after it has set. Other materials can be added to it to retard its setting, to increase its hardness or resistance to heat, to change its colour, or to reinforce Keith Scarterfield - Sound Of Mind. The main sculptural use Sculptures Of Perishing Ornaments - Vociferian - Beredsamkeit plaster in the past was for molding and casting clay models as a stage in the production of cast metal sculpture.
Many sculptors today omit the clay-modeling stage and model directly in plaster. As a mold material in the casting of concrete and fibreglass sculpture, plaster is widely used. It has great value as a material for reproducing existing sculpture; many museums, for example, use such casts for study purposes.
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