>Ok i have replaced a couple foam blocks in one of the wings and have put on1 >layer of glass!!!do i wait for it to dry before i put on a second layer >on!!! and also when i put on the peelply do i put epoxy on the top of it >and squeegy it off like the glass!!! seems like the peelply would be hard to >get off!!! i really dont under stand that part of it!!! thanx Randy ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
From you post I'm assuming you're using epoxy resin. If so, it really doesn't matter that much. I'm sure your first layer is cured by now so remove any peel ply, if applied, and lay up the next or final layers and then cover with peel ply if you want. The peel ply is simply laid on top of the wet glass and "dry brushed" until it takes on a wet appearance. That is the peel ply soaking up the resin from the glass and will help to give a finish that requires much less fill and sanding. When the epoxy is cured you simply grasp the peel ply at one edge and peel it off. Wait for the epoxy to totally cure before removing the peel ply or you will mess up the glass. For multiple layers of glass the general procedure is to apply all layers of glass in a single application, one layer at a time of course, making sure that each layer is totally wetted out before the next layer is applied. With epoxy I don't see a need to do a lot of sanding between layers. Just sand down any bumps, prickly edges, and the like. I've never had a problem with the new lay up sticking to the cured layer of glass. The surface is rough enough for the new epoxy / glass layer to adhere and you only finish the top layer anyway. No need to sand each layer smooth. If you do any sanding, don't sand though any layer of glass. It only weakens the lay up. Do try to make each layer as flat as possible to eliminate any humps and bumps that will require fill and sand to finish. In cases where I would add another layer of glass to an already cured layer that I had to sand a bit, my preferred method to clean the glass was just a real good vacuum to remove dust and not apply any chemical cleaners. Use your best judgement. If you are using Vinyl ester resin, the whole thing changes and I really can't advise as I've never used it. The Vinyl ester cures with a "wax" finish that must be removed before adding additional layers. If that's the case, other will have to advise on the best procedure. Good luck. Larry Flesner
