How to Cast – Simple, Two Piece Casting Using Clay & Plaster

By Paula Briggs

This resource describes a simple, step by step process to enable a plaster cast to be taken from a simple clay object. Even young children can explore this process, with opportunities to use clay, work with modroc, mix and pour plaster, and to discuss concepts such as negative/positive and mould/cast, as well of course as seeing the transformation of an object from one material to another, and the potential to create multiples.

The clay egg
The clay egg


The final plaster egg and its mould
The final plaster egg and its mould


Step One – Making the clay shape, and making a mould

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