[mickmate]

Hey Larry I have some good reference photos of it if you're interested. The 3/4" round steel tube frame was made to line up quite close to the surrounding panel. A shrunk, stretched or straight piece of aluminum angle was riveted to the frame (birdcage) according to the frame curve. The edge of the aluminum angle is trimmed to fit uniformly inside the opening. The formed oversized skin panel is then trimmed to give about 3/8" return and hemmed around the aluminum angles.