Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. modeling material
7. modeling clay

Anotations

Scope note:

A soft, plastic, non-drying, claylike substance, used for modelling. The original was invented by William Harbutt, an English art teacher, in 1897. There are various formulations made from calcium salts, petroleum jelly, and aliphatic acids.