Can you tell I'm recently retired, with feverish mind? Or more
prosaically, I'm exploring fabrication methods now that I have more
time. But I digress.
I just recalled that our local park district has amongst its many
facilites a place to cast jewelry by lost wax. The hobbiest can do
gold and silver, but they practice with bronze and sometimes do small
artworks. Aha!, sez I. Perhaps they can do larger.
What's a good casting alloy? (I'm more familiar with wrought copper
alloys.) I'd be looking for good color and weather resistance, which
might mean a marine alloy. As a pensioner, I'd be looking for
inexpensive. As an investment caster, I'd be looking for fluidity and
low shrinkage. In addition, I might well want good soldering/silver
brazing. I'm thinking something in the CDA 900 series, but I'm really
out of my league here.
What have you folks been using? And while we're at it, suggested
patination methods if your secrets aren't too dear?
Thanks,
John B
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