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MichaelZWilliamson · 12th November 2018, 04:35 AM

I realize this is a very old thread.

Mild acid followed by boiling water is one of the techniques for cold rust bluing, typically used for double shotguns. Acid, boiling water, wire brushing, repeat 8-10 times will give you a deep, blue-black finish.

So the vinegar followed by hot water came close to almost performing the first step.

12th November 2018, 04:35 AM	#26
MichaelZWilliamson Member Join Date: Nov 2018 Posts: 50	I realize this is a very old thread. Mild acid followed by boiling water is one of the techniques for cold rust bluing, typically used for double shotguns. Acid, boiling water, wire brushing, repeat 8-10 times will give you a deep, blue-black finish. So the vinegar followed by hot water came close to almost performing the first step.