I have a commission to make a ring that features a 1.20mm gold wire and sterling silver. Got into all sorts of trouble overheated my gold wire so it went brittle also every time I used hard silver solder it would jump into the gold wire and not stay on the silver baseplate I was trying to solder it to. This is my conclusion: gold gets hotter quicker than the silver. Any tips on soldering gold to silver? For instance would it be better to use 9ct gold solder?