Resin is the other half of the epoxy (along with hardener) that makes such a fabulous dance partner for the soft limp cloth that is fiberglass cloth when dry.
It’s industrial. It is chemical. It sticks stuff together even better than glue. I use West Systems GFlex for the paddle shaft and MAS epoxy for the blade. Both are quite good for the purposes in which I apply them.
So the next time you’re out and about and notice something light and strong and non-metallic, odds are it could be epoxy in some way, shape, or form. Amazing stuff.