RE: Epoxy or Thin CA?
Old School vs. New School.
I have used CA on many a wing center on some very high speed, high load airplanes. I have used this method on every GP Patriot I have built , a DP Edge, and both of my large CAPs.
CA is every bit as strong as Epoxy, it is MUCH lighter and far easier to lay up (seconds vs. 15 -45 minutes).
I have put these planes through things no other pilot would dream of (trying to break speed records in power dive conditions) and the wings held up flawlessly under many, many flights.
One of the patriots wings failed after 15 consecutive dives at near 150 MPH, it was not at the center section, but rather at the wingtip area.
CA works fine, and it is a LOT easier, faster and cleaner than epoxy.
DP