world gathers for metal finishing
Q&As since 1989
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Sink mfgr can't get the copper dark brown
2004
I am trying to apply liver of sulfur [on eBay or Amazon affil links] to a large copper sink to achieve a dark rich brown finish. I have been unable to get the desired results. I have applied very dilute application and very strong solution both hot and cold with the same results, turns it black. I then scotch brite the surface to get the texture I want and it ends up a purple-gray color.
Any help would be great, Thanks
Jim HolmesManufacturing - Houston, Texas
You can use other methods to achieve the brown patina you refer to.
Greg Earlcopper - Mexico
2004
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