Hi All- I’ve searched the archives - I’m sure the answers must be
there, but perhaps I didn’t type in the correct subject line. So:
Sometimes my sterling turns grey in the pickle. It’s not firescale -
unfortunately I know what that is. I don’t think it’s the pickle
because I can fix the problem by fluxing the piece entirely, heating
& pickling again - comes out great. But I still wonder what causes
it & how to prevent it from happening. Thanking you all in advance
for your advice.