Well - here are a couple of things to try.
Have you run the pieces in abrasive media prior to the steel? In any
case, that will clean up the work. While that is running, try the
trick with a can of Coke to clean up your steel. Since the first
color you get with LOS is gold, that might be what’s going on - that
is somehow your barrel and/or your shot got contaminated with weak
LOS. So after cleaning the pieces in abrasive media, now try running
in the steel - clean solution etc.
It’s not likely that they are gold plated - I regularly run a
mixture of gold and silver and the stuff doesn’t plate out. ( Much of
my work is mixed metals).
Now for the details - exactly what are you running in what machine
with what solution? Have you adequately removed investment prior to
We can figure this out, but it’s hard when I have to guess about so