What is a sculpting method that creates artwork by adding material to an underlying structure.?

A sculpting method that creates artwork by adding material to an underlying structure is known as additive sculpture. This technique involves building up layers of materials, such as clay, plaster, or wax, around a core or armature to form the desired shape. Artists can manipulate the added material to refine details and achieve the final design. Additive sculpture contrasts with subtractive methods, where material is removed to create the artwork.