Hi, I have been making some jewellery from pmc silver flex and they are firing fine, just over the recommended time to make sure they're fired all the way through. Glowing orange etc...
I have to add jump rings after this and they need soldering closed but... The pieces explode! Literally burst open and fly across the room. I'm looking at selling jewellery with open jump rings which I'm not happy about.
Does anyone know why this might be happening? Are they too cold? Damp?...