Hi Zach,

These 2 Threads should be of interest;

http://www.talkcomposites.com/276/wooden-pattern
http://www.talkcomposites.com/56/Foam-Pattern-to-a-Gloss-Finish

You must coat any styrene based foam with an epoxy/glass cloth and build your final finish from there, otherwise the resin systems used in the unimould will attack/dissolve the foam, so ensure it's well sealed!

Paul Statham
Easy Composites / Carbon Mods - Technical

I need to make a male plug out of MDF and one out of polystyrene as the base for a Uni-Mould female,