Buying sterling coins or sterling scrap will all contain a pure
copper alloy, which I would try to avoid.
At one time I was casting 500 to 1000 sterling rings, pendants,
charms, and earrings each week. I used to buy mostly Franklin Mint
sterling rounds from my local coin dealer at slightly over spot.
These were an excellent form of sterling to use, and this was before
de-ox and Argentium were available.
I just wonder, if this sterling worked so well for me as I have cast
over a million pieces and these were sold to wholesalers over a 12
year period, why would someone avoid this form of sterling?
I tried using fine silver and using s-88 de-ox alloy, but when you
are casting 27 7"x3" flasks a week with 350 grams per flask, it was
too much work, and there was no upside as no one knew the difference.
When I needed to fabricate, I roll out a sterling round, and this
works great, and I save quite a bit of money by not paying suppliers
prices plus postage. I use fine rounds to roll out and make bezel
I have never had much of a problem with firescale or firestain with
casting or fabrication over the last 40 years. I am not fond of
polishing, so I learned to control the heat when soldering and not
Richard Hart G.G.