Hi all I want to make a split mould for this air intake for my car out of Pre peg ' I bought the uni mould kit but have since found out its no good with the higher temps with the pre peg
Could I use the glass fiber mesh out of the uni mould kit with the high temp resin and the EG60 Epoxy Tooling Gelcoat .

or if not can you make a split mould using the tooling pre peg ?

Unless he sprayed it, wich would be very difficult because of the short pot life, he must have sanded after the final coat. The high gloss coat gives a nice finish, but not nice enough to go directly to the moulding.

If your plug was ok, and you used polyester tool coating (or vinylester) on a polyester plug surface, and never used 1 component products during the plug making, then it clearly comes down to the application of the release agent. Did the flanges stick together as well?