With the copper level in these metals changing it impacts the
traditional antiquing process.
Yes, changing to perhaps no copper at all (?) in the Argentium
alloy. I have questions about use of Argentium for casting, since
much of my work depends on antiquing to look right. So far I have
just used it for earrings that I want to look all bright.
Todd, have you tried Rio Grande’s Black Max? It is not just liver of
sulfur, it contains hydrochloric acid and tellurium. Hazardous
shipping charges, but it works very well for me on regular or de-ox
sterling castings, using the de-ox alloy from Stebgo Metals. It also
will color gold grey when used with a steel applicator. Usual
I have used many pounds of de-ox sterling shot over the years, but
have switched back to regular sterling, along with using a
modification of Lee’s firescale-free casting technique. I cast
centrifically, so I _ carefully_ reach over the spinning arms and
prematurely stop the spinning by pressing down on the center button
with my heat-gloved hand. Then I quickly put the flask in a larger
flask on a steel plate, drop some wax shavings on the button area,
and slap another steel plate on top. This creates an oxygen-poor
environment for the flask cooling process, and makes much cleaner
trees. Who ever knew that oxides were forming so late in the
process?! It really helps. My castings are usually white now.
M’lou Brubaker, Jeweler