Here's a quick tip for making professional looking strong bonds with Aeropoxy. After determining where the frame or bulkhead fits in the fuselage, sand the glass with 80 grit paper. This will provide "tooth" for the bond. Wash with laquer thinner or equivalent solvent, and allow to dry. Insert and locate the frame, and tack it in with a small amount of gap filling CA. Just a couple of spots will do.
Apply the Aeropoxy (using the mixing nozzle) to the periphery of the frame, then make a small fillet with a "Q-Tip". The Q-Tip radius is the right size for a strong fillet, and will also remove any excess adhesive from the joint. Excess glue adds weight, looks bad, and does not contribute any strength.
Clean up any excess Aeropoxy in the area with laquer thinner or equivalent, and allow the adhesive to cure.

Enjoy!

Harley Condra
BVM REP
Team JetCat