In CAD, it is possible to generate virtual models from three-dimensional objects with the aid of the computer. This depiction takes place by means of edge, surface, and volume models, which make it possible to create highly precise, true-to-scale drawings. CAD is used in the most diverse branches of technology, including mechanical engineering and architecture.

Engineering work and artistic work come together together at the Kunstgiesserei St.Gallen.

This is of use, for instance, in building internal structures for large sculptures, which should be both as stable as possible as well as light and invisible. It is possible to calculate both geometric as well as physical properties such as maximum loads, density, or conductivity. During the practical realization, CAD designs often have to be adapted to the real circumstances manually. What thus arises is an interplay between designing on the computer and the actual requirements of a three-dimensional work of art.