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Blade finishes...
I've acid etched damascus with the ferric chloride and I've read all manner of things from vinegar to mustard finishes. So considering 0-1 or high carbon steel... I believe you etch with ferric chloride to bring out the hamon but just for rust prevention, does it help? What about basic cold gun blueing? Will that stay on and help prevent rust? I once built one of those Kentucky Rifle kits and the barrel had to be blued. I just got that stuff from the big box store and it seemed to work pretty well as I don't remember any issues with it.
I know there are other things like gun cote or ceracote etc. But these to simple and "easy" applications, the blueing and/or ferric chloride, does it help with corrosion resistence?
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