Final answer:
The immersion of a body part into melted wax is unrelated to the actual question content, which pertains to the lost-wax casting process used in creating metal sculptures.
Step-by-step explanation:
The immersion of a body part into a melted wax bath for thermotherapeutic effect is not directly related to the subject matter described in the references provided. Instead, these references describe the process of lost-wax casting, which is an ancient technique used to create metal sculptures. This artistic technique involves making a clay mold of the intended sculpture, coating it with wax, and then covering it with plaster or another material to create a mold. Upon heating, the wax melts and is drained away, leaving a cavity that is then filled with molten metal to form the sculpture. Once the metal cools and solidifies, the mold is destroyed and the sculpture is polished. This process has been used historically across different cultures as mentioned, including in the creation of intricate Hellenistic statues and ancient Colombian gold artifacts.