You didn't mention what these cast frames were made of.
They look like bronze. Not sure what she actually used for her grain.
If the frames are sterling or brass, use a chemical like "Attack"
epoxy >remover to disolve the "Bondo" away, clean the metal
thouroughly and if you are handy with a torch, actually fuse weld
using matching metal wire, or locate a local welder with a "TIG"
setup (tungstin inert gas) who can weld up the holes.
Thanks for the epoxy remover tip! I must admit that I'm both curious
to see what's under there and a tad fearful of what the filler may
hide. My weenie torch isn't up to fusing this stuff. But, I can use
the local art center's torch set up. The clients haven't told me
what they want to do with the castings now that they've seen them. I
hope they didn't pay too much for them. I'd like to make another
master and recast the whole thing but I don't think they would want
to pay for another go-round.
Off line, another jeweler told me that I might be able to use a
special paint to coat these poor things and plate over that.
I would like to thank everyone who has taken the time to help me with
this project. I can salvage some of these things but I'd really like
to be able figure out what she had planned to do to the ones with the
weird paste stuff on them.