Rust Bluing

[sheepherder]

Originally Posted by Machine Tool

Could we consider urine a type of salt brine? That is whats called for in quenching water hardened tool steels.

Don't know...I've never [intentionally] tasted urine...Although I recall an episode of CSI where some fashionable women drank their own urine...From wine glasses, no less...

In Staging Battalion before leaving for WestPac Ground Forces, we were told that urine was sterile, and that urinating on a contaminated wound was an acceptable (or at least field expedient) substitute for disinfectant...

I wouldn't think it had salt in it...or it wouldn't be sterile...