Thank you for the replies and both on and off-forum.
@Bob and Jerry: --With regard to soldering, using carborundum grain
is almost like sticking something in sand to hold it in place. I
prefer to use it instead of a third hand for certain things that
need to be held upright or at a particular angle, etc. --It’s an
"anchoring medium," I guess.
BTW, maybe I shouldn’t have said “fine grit” because what we worked
with is slightly more coarse in size, and I can imagine that I don’t
want it to be too terribly fine anyway. --I slapped the “fine grit"
label on it because it is pretty doggoned fine in comparison to the
much larger pumice “pebbles” I have in my pumice pan (I’m not a fan
of pumice for smaller stuff…) Anyway, we used it in a small (maybe
3-4” diameter) bowl (I’m not sure what material the bowl was made
of) that lent itself very well to being able to keep things upright
when you’re using a tiny flame to do precision work. I don’t think
it was too much of a heat-sink, as I never had any problems using
it–that is to say, I don’t feel as if I had to use more intense
heat or extra flame-on time to get any given job done. --It seems to
work well for silver, gold, platinum, different combinations of
mokume gane, etc.
@Marlin: You know, I’m not sure whether it’s caborundum or corundum
grain–I understand why you ask–I think that at one point I may
have even searched for both. I’m pretty sure the lady I worked with
said carborundum–but I’ll have to double check with her. She got it
so long ago though (15+ years, I think), that I’m willing to bet she
may not remember.
I <3 the Orchid Forum. --To the rescue yet again! Thank you!