I’ve been asked to make a few of my sterling designs in 14K
double-clad GF. I annealed it to a dull red (what I had read was
proper) and put it in my pickle pot (new batch of sodium bisulfate
and water in a small crock pot). The gold came out as if partially
copper plated (about 60%-70% of the surface looks like copper). I
realize that gold is an alloy of gold, copper, and silver and that
the gold-fill has a brass core. Is this normal behavior or am I
doing something wrong? I can remove the copper using a brass brush
(and some flex shaft time) but am thinking I must be doing something
wrong. I have two separate pickle pots (one for this gold-fill, one
for sterling) but am using copper tongs in each.
Thanks in advance!