I saw several posts about using epoxy resin to paint down fiberglass cloth. My question is, how do you go about doing it? Should I thin it with alcohol or not? Should I use 5 minute or 30 minute epoxy? Just so you will know, I am reinforcing the firewall on a Hangar 9 Corsair to put a RCV 90 engine on it. The photo shown is from another build. The light colored pieces of wood were cut as backing plates for the engine mount. My plan is to cut plywood to the shape to completely fill those spaces and then glass cloth over them. Thanks for any advice.[img][/img]