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Old August 27, 1999, 09:19 AM   #9
jjk308
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Join Date: August 26, 1999
Location: Oldsmar, FL
Posts: 16
I've tried every cold blue known to man and Brownells Oxpho Blue is the only one that won't cause after rust eventually. They put phosphoric acid in it, which prevents rust. the blues that have a lot of copper, like permablue, actually cause rust. Plum brown, I've got a bottle but haven't tried it yet. I did try the slow rust blueing once. Total disaster. There was something in the supposedly distilled water I used that turned the gun bright orange instead of black! Not a conventional rust but a real hard orange finish. Anyone have any experience with this process I'd appreciate some pointers.
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