I’d make a plaster/silica
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October 18, 2010 at 3:16 am #11753
I’d make a plaster/silica replica of the shell and fuse over that. If the design has no undercuts you could do it out of clay, bisque fire it, kiln wash it, and re-use it.
Real shells disintegrate and can create huge bubbles due to off-gassing.
Helios Kiln Glass Studio