I need to make a pair of 9ct gold bezels for some stone (Blue
John) I am cutting and have never worked gold before. Any major
differences in technique required compared to sterling silver?..
I’ve never used 9ct, however, gold does not conduct heat as
quickly as silver, therefore, the area where you are soldering
gets hotter, quicker, making it easier to melt. The solution is
to use a cooler flame than you are use to for silver. Start out
smaller and softer than you think you need. Patience here can
save you $$$. Heat the area around the joint (not the joint
itself) until your solder flows. If you are not already doing
it with silver, be sure to dip your gold into a solution of
50%/50% boric acid and alcohol (denatured, gin is too expensive)
prior to soldering. Ignite the pieces after dipping to leave a
protective coating of boric acid on the pieces. This will
prevent fire scale. Flux, solder and pickle.