Onto lid silver soldering.
Start by chopping up silver solder into 1/16 inch long pieces.
Next take bread rapper ties, strip of the outer plastic and use the steel inner wire wrapping it through the lid holes around the frame.
Next carefully drop the pieces of solder into the lid and frame where they meet each other (sorry for the blurry pic).
Next dribble a small amount of liquid flux into the crevasse, then apply the micro torn heat from underneath. The little pieces of solder will just flow right in and disappear!
Here are shoots of the solder completed.
Steel wool and it bright and shines.
Gamma is the communicator that you see in "The Making of Star Trek" book. This particular communicator had a deeper brass lid with rounder
sides. It was also one of two that had a steel frame rather then the more common brass frame on the lid.