Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. visual works components
7. sculpture components

Anotations

Scope note:

Channels that feed molten material to a mold, in contrast to a vent,which lets air escape. Both sprues and vents make up the “sprue system,” which circulates molten material from a pouring cup through a refractory mold and allows air and casting vapors such as steam to be released. In lost-wax casting, “sprue” is the term used for the solid wax rods (rarely reeds or terra-cotta pipes) used to create the channels in the mold. Sprues are also the solid metal that has filled the channels upon cooling, which is generally removed during fettling.