I have a wedding band that someone brought me that is three
braided pieces - platinum, yellow gold, and rose gold. the solder
seam has broken and he has asked me to fix it. I don't have much
experience with platinum, does anyone have any suggestions on the
best way to fix this? would a gold solder work properly?
I've repaired broken platinum wire with white gold solder, in rings
with both 18K gold and platinum present. Heating it up enough for
platinum solder seems like a pretty risky proposition. I put the
repairs underneath other strands' crossings, as best I could, even
cutting away extra wire to ensure the placement of the joint, but the
color was actually fairly good anyway.
Alternatively, if you could get some time on a laser welder, you
could do it in a jiffy, no risk, since the heat would be concentrated
in the location of the weld.