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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 link] 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 Holmes
Manufacturing - Houston, Texas

You can use other methods to achieve the brown patina you refer to.

Greg Earl
copper - Mexico
2004

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