Hello

I´m gonna buy your infusionkit with epxy for making a roofpanel in carbon.

My problem is that my mold is in fiberglass and polyester.

What i have read is that not so good for use with epoxy? I read that the only soloution is to have PVA that isolate the polyester from the epxyresin?

But if i use https://www.easycomposites.co.uk/clearpol-iso-npg-clear-polyester-gelcoat

should that work? Becouse its a polyester gelcoat that work with epoxy.

I am thinking wrong? Or is that gonna work?

I am from Sweden so sorry if i spell wrong.

Best regards Magnus

Hello

I have sprayed gelcoat for years with a automotive spray gun. (gravity feed)

The bigger the tip size the better. It comes out slower than a gelcoat gun, but you get the same result eventually. Some guys add a little acetone to thin, but I don't.

I now use a gelcoat gun which is worth every penny. Especially in how easy it is to clean up.

As far as laying up epoxy in a polyester mold there is 100% no problem with that. (it is all I ever do)

Just use good wax meant for composite work and PVA and you will have no problem with release.

The only reason to use epoxy for a mold is when great accuracey is needed because epoxy does not have the shrink rate factor that polyester has.

I have never needed that accuracey yet.

Just a tip about PVA. I apply PVA with a bunched up soft cloth just dripping with PVA.

I rub it in with circular motions. You will see it bead up, but just keep going over and over until it just stays shiney and does not bead up any more. It evaporates as you rub it out until it viscosity is thick eneough that it can't bead any more.

It is a fine line to know when to stop. But i aleays get a nice shiney film of PVA everytime I do it this way.  

When sprayed I get a beaded up mess.

Fred