Originally posted by MinnFlyer
If you're going to FG the center section, then by all means, epoxy the two halve together.
As for the Fiberglass, Here's what I do:
Spray the wing LIGHTLY with a spray adheasive then, tack the cloth down to the wing. Next, wet the cloth with THIN CA (You can use medium, but you'll have to rub it into the weave with some waxed paper). Whichever you use, do it outdoors! It will create tons of fumes!
I prefer to spray the fiberglass to get it tacky. Less of a mess. As was pointed out, peel back the covering!

Apply to top and bottom. This really strengthens the wing. Thin CA works great. Work the glue in slowly back-and-forth all the way around. No need to wet anything. If you do, it will make quite a mess.