I am experimenting with partially copper-plating sintered fine
silver, in preparation for creating patina effects. Sometimes (after
plating) I heat and quench the samples to create copper oxides, and
with longer heating the copper seems to disappear, but there can be
a faint warm tone left on the surface. I want to understand whether
the copper is going. Is it ‘burning off’ or is it migrating into the
silver, or both? Thanks in advance!