[Beginners' Corner] Master for casting

Hello Again Everyone- I am a beginner enamelist and novice silver
worker. I have been fabricating settings with bezels out of sterling
using bezel wire to set my enamels. I am now thinking of having these
cast to do some production work. To do this, I have been told to make
the originals out of 16 gauge bronze. Now- I am confused as to this;
Do I fabricate the original setting with the bezel wire, or is the
bezel wire just too thin to cast? Do I make the entire piece without
the bezel wire, have that cast, then put the bezel wire into the
setting by hand? I would appreciate any help on this… Thanks-
Cherie Morris Flying Bird Studio