Hey guys. I've got a very thin and fragile helmet that I'm painting and I'm wondering about ways to thicken it up on the inside and strengthen it. I've used some Bondo to fix some flaws in the surface, but the stuff hardens too fast and it's too thick and heavy to be able to smear it evenly on the inside. I guess adding some fiberglass fibers and resin or epoxy might be the solution. But I need advice about what brands, kinds, or techniques would work for this. The epoxy would have to be pretty thin to spread out evenly. Thanks.