I'd like to be able to fix the brace and clean the trombone without losing a lot of the patina. Is there a way I can do that at home? I'm very mechanically inclined and I thought about silver soldering it myself. As far as the patina I feel like if I used a damp cloth, too much of the patina would come off with the dirt.
I've included some pictures. Your advice would be greatly appreciated!
Best regards,
--H
The album:
https://photos.app.goo.gl/Yi66ERqcarAa5XFf6
Photos: