RE: how to fiberglass
Just use thin CA. I thought the same thing as you that it would use a whole bottle & fumes, but honestly it wont even take a 1/5 of a bottle. It goes a LONG way. I prefer to use medium CA though as it doesn't run everywhere and make such a mess. It works fine and you don't use very much so the fumes are ok. Run a fan while you do it if you're worried about fumes.