CXBXDV9 abstract design album Chinese Yearbook of

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casting or founding, shaping of metal by melting and pouring into a mold. Most castings, especially large ones, are made in sand molds. Sand, mixed with a binder to hold it together, is pressed around a wooden pattern that leaves a cavity in the sand. Molten metal is poured into the cavity and allowed to solidify. Permanent metal molds are used to make many small, simple parts; shell molding gives greater accuracy for a large volume of semiprecision parts. A two-step process, investment casting, produces small,writing board, complex shapes. Wax or plastic replicas of the parts are molded in accurate metal molds. These replicas are covered with sand in a box to make the final mold. When the whole mold is heated, the replica melts,illuminated signs, leaving behind a cavity into which metal is poured.
cornice , molded or decorated projection that forms the crowning feature at the top of a building wall or other architectural element; specifically, the uppermost of the three principal members of the classic entablature , hence by extension any similar crowning and projecting element in the decorative arts. The term is also employed for any projection on a wall that is provided to throw rainwater off the face of the building. The cornice undoubtedly had its origin in the primitive eave projection: the Greek Doric and lonic cornices recall early wooden roof forms,neon sign, and the Egyptian cavetto-and-fillet cornice is a derivation of the overhanging papyrus stalks that formed the eaves of primitive shelters. The cornice early lost its structural significance and became a stylized decorative element; in the Greek and Roman eras it assumed firmly standardized forms in the classical orders that were retained, with variations, through the Renaissance and later periods.

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