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Moulding from an ice or snow original Answered

I'd like to be able to make a mould from an original shape in snow or ice.
Any ideas ?

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gruffalo child

7 years ago

Paper-mache? It doesn't generate any heat and should work...

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steveastrouk

7 years ago

You could try alginate moulding material. Everything else I can think of generates a lot of heat as it cures.

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and7bartonsteveastrouk

Answer 7 years ago

I'm thinking more of something I can spray onto the snow or ice, which will set fast, leaving a fine film which will support itself even if the snow or ice melts at that point. I can then spray more coats on until the mould can be touched.
I'd like to be able to make a mould from delicate stuff like ice crystals, icicles etc, and then eventually end up with a mould from which I can cast reproductions in metal, possibly through the lost wax process.
I might well have to go through a number of stages from the initial coating of the snow or ice, to get to a robust mould.
I wonder if snow can be sprayed with a polyurethane varnish.
I very much doubt it....... I guess it will immediately melt.