RE: Super Glue
I'm in my mid 40's and build all my planes, is that anything?
Like Oscar, I use a combination of glues.
Gorilla glue is a great product family IMO. I prefer the brown over the white and thier new CA.
The CA is fine but a little thick and slow to kick off. I usually use kicker to get on with the task. The white is similar to what you described a little rubbery and not brittle. It works well on fan fold foam and other foamy plane repairs. I recently tried it on a wing and didn't like it all that well. I like good ol ambroid for that stuff to be honest.
The brown GG is awsome for anything I've used it on. Firewalls included.
It's the only thing I use for hinges anymore.
About the only time I use epoxy anymore is for glassing and skinning a foam core wing. Both are done in a vacum bag and I only use West Systems.