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Treating copper

I'm making a trellis out of copper and I want to have a tarnished look to it. Is there a product out there that can "age" the copper?

Jeanne Mertz
- Phoenix, Arizona, USA
2003

I was told to spray on ammonia ⇦ on eBay or Amazon [affil link] and then spray on vinegar ⇦in bulk on eBay or Amazon [affil link] and it will speed the tarnish look. OR if you didn't want to, then to spray with clear acrylic paint.

Catherine Banks
- Austin, Texas
2004

I assume the ammonia is supposed to dry before applying the vinegar? It is dangerous to mix acids, even mild acids like vinegar, with ammonia to my understanding.

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
2004

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