I suggest that you might use small rivets to hold the beading in place while the soldering is completed. Brass wire would be ideal, with the ends simply bent slightly, as this will cause no distortion of the work. The solder should flow into the rivet gaps and give a very neat finish, with the rivets only detectable able a year or so as the solder becomes grey rather than bright. Use lead-free solder and this will take even longer.
Cheers, Tim
Edited By Tim Stevens on 28/09/2019 15:17:33