| Then onto new techniques - I managed to get some foam from a fibreglass specialist in Queenstown yesterday. He generally advises against foam, and prefers clay, but when I need to have something shaping against gravity I think this might work better. Also in NZ it is very hard to find XPS (extruded polysterene foam) - it is locally known as 'gold foam' and used in some comercial buildings, but I can't find any sources for local off cuts. | 
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