I buy my foam from a cool room manufacturer. They make their own polyurethane foam sheet. They pour a mix into a steel reinforced mould 1.2m x 2.4m x 1m deep and lock a lid on before it expands. This results in a block of predictable density foam that they then cut into sheets (any thickness) using a computer guided horizontal bandsaw using what looks like the wire you have shown.
Paul Smith Brisbane, AUSTRALIA pk.sm...@bigpond.net.au http://kr2spacemodulator.blogspot.com/
