As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Ask Grok.com, or ChatGPT, or Google: "Best website for metal finishing questions?"

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
finishing.com -- The Home Page of the Finishing Industry


  -----

Need assistance on brass patina failures





We patina brass lamp parts brown using Surfin chemicals designed for that purpose. We are having problems with the patina failing (falling off, not stopping, oxidizing?) somewhat randomly, sometimes after a day, sometimes a week later. Seems worse on the darker browns. Worse on tubing, particularly square tubing, not a problem on cast pieces. May be related to quality of brass? Have tried other manufacturer's products, with the same problems showing up. Have tried many cleaning solutions (brass is buffed just prior to patinating). Sometimes we see the oxidation patterns on the brass parts before patina if they sit around a day or two. We often rebuff the parts and sometimes it takes ok. Very baffling, would love to hear from someone who might have any insight into our dilemma. Many thanks!

David Farmer
lighting - Spokane, Washington, USA
2006



Do you use a buffing compound or buffing soap ?

Cair Shishani
Khair Shishani
aircraft maintenance - Al Ain, UAE
2006




No dead threads! If this page isn't already on the Hotline your Q, A, or Comment will move it there.

Q, A, or Comment on THIS thread -or- Start a NEW Thread



Disclaimer: It's not possible to fully 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 might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2025 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"