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Old November 26, 2012, 10:00 PM   #5
medalguy
Senior Member
 
Join Date: August 31, 2009
Location: New Mexico
Posts: 1,017
Vinegar will dissolve the zinc in brass, not good.

Use stainless steel pins. The brass will emerge, after a couple of hours, looking like it did when it left the factory. I've run several batches of totally black, left-in-the-dirt-for-a-year batches and they all look wonderful.
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