Part 3, Assignment 3. Moulding and Casting. Casting in a plastic bag onto hessian.

Casting with plaster was proving a disappointment.  The eggs worked well in practice but haven’t excited me.  I wondered what would happen if I cast into a bag more loosely, and also onto a piece of fabric which would be embedded in the casting material.  I also wondered about using Sculptamold as a casting material rather than a moulding material.

A piece of hessian was placed in a plastic bag and a slightly liquid mixture of Sculptamold was poured onto it.  The bag was hung in a tree to allow gravity to settle the casting material, and also to help dry the mixture in the sunshine.  Hessian was used because it is a neutral colour, has an interesting texture, and if it didn’t stick to the cast it would at least leave an interesting pattern.

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The partially set casting was put in a low oven to finish curing.  The result was both light in weight and quite intriguing.  The hessian appears almost as a natural skin to the Sculptamold, it seems to cradle the molding material.

So, casting straight onto a textile works.  Although I haven’t fully cast the internal shape of my vessel (the plastic bag), I have cast the lower curve of the bag.  Next steps if time: experiment with casting onto different fabrics.

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2 thoughts on “Part 3, Assignment 3. Moulding and Casting. Casting in a plastic bag onto hessian.

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