Vangleator
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There's lead in free machining steel too. Just makes it easier to turn on the lathe. If you want to find out about the chemicals that are being created in the vinegar solution, like the green copper acetate go to www.chemsupply.com.au/msds.php#.
Here is the extensive list of chemicals they sell and the MSDS's (material safety data sheets) to go with them.
I would be more worried about the amount of zinc going into solution, as it is far more reactive than lead or most other common metals (apart from magnesium) in an acidic environment. Surrounded by the more noble metals of lead & copper, zinc is the first metal to dissolve in a corrosive environment. That's why ships use sacrificial anodes of zinc on the outside & inside of the hull. And galvanised iron doesn't rust on the cut edges because of the large surface area of zinc to the small surface area of iron. The zinc is corroding very thinly all over the galvo to save the iron from rusting. Most zinc powders are white, so aren't as noticable as the green of copper.
A good thing about brass is that it removes sulphur from beer & wine. Now wineries (& breweies) have gone to S/steel, they have to remove the sulphur another way. The brass surface goes black as it converts the sulphur as copper sulphide.
Typing this is thirsty work, so I'll finish here & have a beer. Cheers. :beerbang:
Here is the extensive list of chemicals they sell and the MSDS's (material safety data sheets) to go with them.
I would be more worried about the amount of zinc going into solution, as it is far more reactive than lead or most other common metals (apart from magnesium) in an acidic environment. Surrounded by the more noble metals of lead & copper, zinc is the first metal to dissolve in a corrosive environment. That's why ships use sacrificial anodes of zinc on the outside & inside of the hull. And galvanised iron doesn't rust on the cut edges because of the large surface area of zinc to the small surface area of iron. The zinc is corroding very thinly all over the galvo to save the iron from rusting. Most zinc powders are white, so aren't as noticable as the green of copper.
A good thing about brass is that it removes sulphur from beer & wine. Now wineries (& breweies) have gone to S/steel, they have to remove the sulphur another way. The brass surface goes black as it converts the sulphur as copper sulphide.
Typing this is thirsty work, so I'll finish here & have a beer. Cheers. :beerbang:
