Talk Composites - The Forum for Advanced Composites

Sealing a male "plug" for female mould of MDF and polystyrene.

http://www.talkcomposites.com/Topic471.aspx

By Zekewarg - 2/2/2012 4:58:13 AM

I need to make a male plug out of MDF and one out of polystyrene as the base for a Uni-Mould female,
How would i seal the MDF and styrene to get tge uni-mould to release properly?

Cheers Zach
By Paul (Staff) - 2/2/2012 9:50:51 AM

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!