Quote:
mgulino wrote:
...(blue dish washing liquid, lemi shine, and water solution)... a pretty pinkish-copper color.
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The steel case is an anomaly here.
Expose brass to to a weak acid (and citric acid, which is Lemishine's active ingredient, is a weak acid) for too high a concentration or too long a time and you will liberate some zinc from the surface of the brass and it will turn pink.
The amount of zinc liberated will generally not affect the mechanical properties of the brass since it only occurs on the surface atoms. You can try re-tumbling the brass with just a pinch of Lemishine and see if that restores the shine to the brass.