Hi,

    Have made first mould with high surface finish and applied 5 coats of release wax. Applied PVA with sponge to get an even coat. OK for a few moments then it forms into droplets, which is what you would expect when applying a liquid over a waxed surface but surely this will impact on surface finish of gel coat ? I tried again with a brush and the same effects. Any advice gratefully received.

Trevor

Don't waist your time use semipermanent release agent.  The only time I use wax is on plugs. 

Hi Shaneer22,

                       What I am calling a mould is what I think you would call a plug. A spray painted MDF male mould to make a female  master from epoxy mould making putty and tooling gel coat.

Trevor

I don't normally bother with PVA. For plugs, I use 4 coats of wax. Mould releases nice and easy with some compressed air.

Hi Trevor

PVA has its place and there are some tricks you can use to get a nice even coat that stays down.

What I do is to use a soft small cloth bunched up. I then get it soaked in PVA and then start rubbing it into the plug. Keep it nice and wet. Go over and over in soft circle patterns keeping it from beading up. Eventually as you do this the PVA will thicken to the point that it will not bead any more. That is the time to stop.

Hope this helps

Fred  

Hi Fred, Carbon Cactus and Shaneer,

                                                          Thanks for the advice. It is  helpful to get several perspectives on a problem

Trevor