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Finishing Copper for Outdoor Use

Q. I am looking for a process to clean and shine a copper garden trellis that I manufacture and am curious if bright dipping is a cost effective answer. Will the shine remain when the copper is used outdoors? Would appreciate your comments.

Dave Millar
- Urbana, Illinois, USA

"The Chemistry of Benzotriazole Derivatives"

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A. Bright dipping is a fine idea, but you will need to immediately apply some tarnish preventative. Benzotriazole ⇦ on eBay or Amazon [affil link] is a good one, but for outdoor use you would doubtless have to also use a clear lacquer; the simpler approach is a lacquer which contains benzotriazole, like Incralac ⇦ on eBay or Amazon [affil link] .

Ted Mooney, P.E.
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finishing.com - Pine Beach, New Jersey
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