The grille was first designed in clay, then made into a plaster mold.

The cup's form was so complex, however, that a traditional plaster mold was out of the question.

The process from sketches to a plaster mold took four years.

When the clay piece finally meets his standards, which could take many hours, it will be used to create a plaster mold.

There is a plaster mold on the Eastern wall frieze.

A plaster mold was placed over the finished clay framework and allowed to dry.

He later started his plaster mold and casting firm.

When he has completed the head, a plaster mold is cast.

She makes plaster molds, then shapes paper inside them.

Design sketches and original plaster molds are also on view.