19-07-2018, 09:39 PM
Gday
Don't know if this might help, but my screen frame is brass and soldered to it is a C section to hold the T rubber. the C is folded from thin brass sheet, with the side opposite the opening for the rubber, flat. The lead solder will chrome after it is done. I had to remake mine some 15-20 years ago as it was coming off and badly damaged. Sorry cannot do pictures.
Spex in Oz

Spex in Oz