Does anyone know what kind of solder would have been used to join up
the 2 halves of antique filigree rings?
I have a platinum filigree ring that needs a new shank. The client
has had it repaired twice because it keeps cracking at the solder
joints. My guess is that either the solder originally used to join
the 2 halves of the ring is causing some kind of contamination or
that the shop that originally repaired it contaminated it some
other way; maybe they used acetylene.
I cut plenty of metal away from the old solder joint to remove any
contaminated platinum that may have been present, but I’d like to
avoid using a solder that is too much hotter than the original
The customer told my client that the original shop said the ring was
previously contaminated by 18 karat. I didn’t see any gold on the
ring and have heated the metal and not found any change in the metal
that would indicate gold solder.
I’d like to keep this job from coming back to haunt me!