I’d first like to thank everyone who respnded to my post on
casting platinum pieces into 18k gold. It works very well.
The two wedding bands came back from the caster on Monday. Since
I had built up the surface of the waxes with soft dental wax,
there was more than the usual clean up. I decided to remove part
of the surface by taking very shallow cuts in my lathe- this gave
me a very accurate thickness- and then hand filing the profile
back into the rings. The major problem was porosity in the gold
surface- that was solved with a bent bur hammer in the flex
shaft, and repeated resanding with a sanding stick. I played with
surface finishes for a while- the contrast is surprisingly subtle
between the 2 alloys- and gave the bands a soft matt finish.
Richard D. Hamilton
Fabricated 14k, 18k, and platinum Jewelry
wax carving, modelmaking, jewelry photography