Quote:
Originally Posted by nukem556
The Birchwood-Casey blue and rust remover works great.....seems it just phosphoric acid, don't know the concentration to brew your own, but hey, it's 5 bucks. If you degrease the surface well, it'll remove the old bluing in 3 or 4 minutes
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Does this really work on Parkerizing? Like I mentioned above, I have experimented some on junk parts and anything I have used so far has just penetrated the Parkerizing and etched the metal underneath. In most cases it would etch the metal before you could even see any differences in the Parkerizing. The Parkerizing just stays there as a wet sponge and you won't know what's happening underneath until you scrape it off. It appears like it won't come off until the metal it's attached to is gone, so it seems kinda dangerous to me.