The lost wax method of making bronze sculpture

A variety of casting processes can be used when making bronze. Among them are mainly lost wax casting (including investment casting), sand casting, and centrifugal casting. Here is how the lost wax method makes bronze sculptures.

Here is the content list:

• Bronze sculpture by the lost wax method

• Painting and decoration of bronze sculpture

Bronze sculpture by the lost wax method

The method of lost wax casting bronze sculpture involves multiple stages, starting with the creation of a full-scale model of the work using non-dried clay. Secondly, the bronze artist makes the model according to the shape of the bronze sculpture model. This is done by covering the clay model with a half-inch thick layer of wax and then adding another layer of thoughtful clay. A mold is sometimes used to make a plaster cast, which can be reproduced for future use or further processing. The wax model is then baked in an oven or kiln, and during the heating process, the clay hardens and the wax runs off, and the lost wax flows out through small holes in the outer clay. The remaining clay mold is then filled with sand and filled with molten bronze. When the bronze solidified and cooled, the clay was chiseled away to reveal the bronze sculpture. Finally, use the small opening at the bottom to scrape out the inner clay model from the inside of the bronze shell.

Painting and decoration of bronze sculpture

When making large-scale bronze sculptures, the bronze artist often creates one or more small study models to perfect the desired shape and proportions. Then, he might try a larger intermediate model and then try a full-size bronze sculpture. Measuring equipment is often used to expand the dimensions of intermediate models and ensure correct proportions. Previously, large 3D bronze works were always cast in one piece. But now, thanks to a new welding process, the large bronze sculpture can be cast in parts and then welded together. Once the casting process is complete, the bronze statue can be completed. In ancient Greece, for example, metal would be ground and polished, and then a varnish was applied to the yellowish surface of bronze to achieve the precise hue desired. At this point, other metals will be added to decorate specific parts of the statue's body. Therefore, gold and silver may be applied to the lips, while colored enamel or glass is usually inserted into the eyes to make them appear real. Sometimes even a small bundle of copper wire is used to represent the lashes and eyebrows. Real jewelry may be added. After that, the statue will be painted. In ancient Greece, Bronze sculpture - be it bronze or marble - was rarely left colorless. The bronze artist applies color pigments including gold to enhance the overall effect. With the development of the times, bronze sculpture painting has become an independent professional craft.

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