I am working on a Argentium silver wire reversible bezel (a project
featured in an issue of Art Jewelry magazine). The ends of 6 of the
"prongs" are balled up. However one wire prong refuses to ball up on
the end. I have used the ultrasonic and pickle for cleaning and
deoxidizing, and have even filed the metal to make sure it wasn’t
covered with solder. It still will not form a ball. I am sure that a
number of you out there know exactly what is going wrong. Please help
me out. Thanks!