+x oekmont - 12/30/2018 6:32:01 AMYou have several issues here: your mould seems to be made of wood and body filler. These are surfaces, wich are really difficult to get a good release from. A coat of 2 component (!) Laquer would be ideal to seal the ge surface. A single application of release agent on a new mould is very risky. Usually recommended are at least 7 applications with at least 20 min in between.Wax is a very old school release agent. Today's standard are chemical release agent like easylease. These are superior in every way. Pva is kind of outdated as well. There are only a very few special circumstances in wich i would recommend using pva. Your would would will likely cause problems with tge water based pva.
+x oekmont - 12/31/2018 5:22:52 AMNo, 1 component lacquer almost always makes trouble during demoulding. Almost as bad as body filler.
+x Matthieu Libeert - 12/31/2018 2:49:58 PM+x oekmont - 12/31/2018 5:22:52 AMNo, 1 component lacquer almost always makes trouble during demoulding. Almost as bad as body filler.Like Oekmont is saying, - any porous material is the start of disaster. Wood/mdf/foam/stone,... pockets to get your part stuck. - primers and body filler are made to grip on the next layer, in your case your part unfortunately, the idea of coating it with epoxy was good, but you probably still had some spots left that were not coated. - like above; if you wax, use at least 7 coats with buffing it of every 20min (when dry) PVA is ok but hard to get good results with, Easylease is your solution here. - Never use 1K, they are not made to be resistent to resins especialy not polyester resin as the styrene in the 1k will chemicaly bond to your polyester.How to solve your problems if you are not able to spray a full coat of 2K clear/paint;Watch the youtube tutorial of EC using the pattern primer and pattern gloss coat. This will seal your mould and you'll be able to sand it easily and get a nice full seal. (let it all cure for 5 days idealy)Then easylease 7 times and try again