-- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

topic 1120

Keeping copper from turning green



I have a cupola with a bright new shiny copper top. I have polished it with Brasso [linked by editor to product info at Amazon]. Can you tell me if there is anything I can apply to the copper to keep it nice and shiny as opposed to turning green?

Thanks so much!

Joanne S


Please provide your full name on any followups Joanne.

A lacquer (clear) will prevent the copper from oxidizing and changing color. You might talk to G.J. Nikolas.

Ted Mooney, Teds signature
Ted Mooney, P.E. RET
Pine Beach, New Jersey


I am interested in finding a quick way to oxidize copper to speed the natural process by which copper turns green over prolonged periods...any suggestions?

Erik Andersen


For Erik

Get swimming pool chlorine (stronger than store bleach) and soak the copper for a day or so. Will turn green.

Evan Sax
Newland, North Carolina


For complete info about how to turn copper-bearing metals any conceivable shade, see this great book on patinizing.

Ted Mooney, Teds signature
Ted Mooney, P.E. RET
Pine Beach, New Jersey

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2017     -    Privacy Policy
How Google uses data when you visit this site.