How a Bronze Sculpture is Made

A bronze sculpture has gravitas. Even a small or whimsical piece made out of bronze demands respect. It is a material not to be taken lightly. In fact, the sheer heft of bronze gives weight to its presence and sense of place. Whether sitting alone on a polished ebony display stand in a gallery, or displayed outside in a public space where kids can crawl all over it, or placed in a fountain for a tourist to admire, a bronze sculpture is a silent, but powerful part of our world. It fills parks, homes, and offices around the world. It was part of great civilizations long since departed, and is likely to be with us forever.

The process of making a bronze sculpture has been refined through the years. Artists who work with bronze come to appreciate its unique characteristics. It is an alloy that is probably the most popular for casting because it expands just a little bit before it sets. It is, therefore, highly desirable for the way it fills out even the tiniest impressions. This gives an amazing level of detail to the work that otherwise would be missed. It is strong and ductile, which is especially important when working with figures depicting movement.

The artist begins the process of making a bronze sculpture by making the intended shape out of some other material. It might be wood, clay, or wax. Once this is complete, the artist can then create a rubber mold. This is done by putting the original piece part way into soft clay. The rubber is then painted on the part that is exposed before a plaster shell is applied. The clay is removed and the same process is then done to the other side. Once the rubber mold is made, there is a template for making copies of the original piece.

The process of making a bronze sculpture then continues by making a wax copy of the original by putting wax into the rubber mold. When the wax is set and the rubber pieces are pulled apart the artist can go through a process of refining where needed. Depending on the faithfulness of the reproduction, the artist will take as much time as necessary to make sure that they are happy with the results. At this point, an edition number can be put into the wax to identify its place in the run. For example, if the run is going to be for a hundred pieces, the 30th one might read, "30/100" to indicate its place.

Next, a tedious process of making a ceramic mold is completed. Openings are created for the air and wax to escape. Once the ceramic mold is done it is heated and strengthened. Only now can the bronze be poured into the mold. Once it has cooled down, the figure is freed from the mold and the careful finishing process can begin. Techniques like sandblasting might be used to get the surface exactly how the artists wants it. Then the artist can paint or otherwise color the bronze sculpture however they wish.