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• Didn't work for me
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  I mixed 9 cups of muriatic acid and 1 cup of hydrogen peroxide. I dropped some copper tubing (pipe), some pennies, and some stripped copper wire. The solution looked more yellow than blue/green. The coffee can and soup can I put in got dull silvery finishes but nothing that would pass for copper. There was never any evidence that adding the copper caused the copper to dissolve or any reaction to take place other than the liquid slowly getting yellow.

  Posted by andyboy on March 05, 2008 at 19:27:17 Pacific Time

• same here
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  bought 2 gals of muriatic acid, packaged for pool use. Used copper wire, old pennies, copper pipe but not much happened. The pennies looked to be flaking off its copper, but it just didn't look like it went into any type of solution, just floaty solids.

  Posted by damonhoxworth on March 07, 2008 at 17:12:31 Pacific Time