What did you use for burnishing medium? (dish soap, burnishing
compound, etc.) And are you certain they were completely free of
pickle and investment residue when you put them in?
Had you done any tumbling in abrasive media prior to the steel? Did
you wash the items (and the tumbler barrel) thoroughly prior to
As to how to fix it, I would be willing to bet that it’s a very thin
layer that will polish off when you do your final polishing. Have you
tried that on a piece yet?
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