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Old November 30, 2012, 11:01 AM   #28
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Join Date: November 8, 2007
Posts: 2,001
In an ultrasonic cleaner, you can actually watch the tarnish come off in a diluted vinegar bath.

But, in a still jar of vinegar solution, zxcvbob is right, you are actually looking for a color change that indicates that the stain can be mechanically scrubbed off easily in a vibratory or rotary tumbler with walnut media.

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