Re: COLD BLUE
Very interesting thread! Since there are people who are chemically sensitive (copper sulfate being a common irritant to people who work on guns) it is probably not a really good idea to attempt to taste something that some people can 'feel' through their skin. I would imagine that one could get fairly ill fairly quick if they develop a sensitivity. Much of my work is with occupational injury and chemical sensitivity is one of heavy hitters. If you don't have to, don't mess with it.
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