Skipy - A wax spatula is used by sculptors and art foundries in the "lost-wax" sculpture process. If you're not familiar with the process, a piece of sculpture is created using a specially formulated beeswax compound. A mold is then created by pouring a heat-resistant molding compound over the wax sculpture. The wax is then "burnt out" in a kiln and molten bronze is poured into the resulting cavity.

Here are some samples of modern wax spatulas.