Letter 3055

How to patina brass 

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I'm looking for a way to patina brass sign letters. What do you recommend?

Tyler Brown
- Alexandria, VA

And the answer is: get this book from your library --

The Colouring, Bronzing, and Patination of Metals
Richard Hughes, Michael Rowe / Hardcover / Published 1991

Ted Mooney, P.E.
Finishing.com Inc. - Brick, NJ

It depends on what color effect you're trying to get. Here's a couple formulas: Verde Copper Sulfate 8 parts Ammonium Chloride 4 parts Sodium Chloride 4 parts Zinc Chloride 1 part Glacial Acetic Acid 3 parts DI Water 128 parts This is a dip or brush on process. The coating needs to be preserved with some kind of sealer or lacquer to be stable. Light Green Ammonium Chloride 16 parts Sodium Chloride 16 parts Ammonium Hydroxide 16 parts This formula supposedly is stable without preservative. Copper Sulfate can be added to darken the green color, if desired. The book mentioned in the previous letter is indeed excellent. There is also "Contemporary Patination" by Ron Young.

Dave Wichern - Bronx, NY, USA

Tyler - Several chemical companies have antiquing solutions available - Hubbard-Hall has Mi-Tique Patina. This is a room temp process for copper and brass.

Dan Brewer
- Gurnee, IL

ADVICE ON LAQUERING OF ORNAMENTAL BRASS AND STERLING SILVER, INCLUDING MIXTURE OF LAQUER AND THINNER AND APPLICATION METHODS INCLUDING POURING OVER SURFACES. ANY ADVICE AND RECOMMENDATIONS APPRECIATED.

THANKS,

JORY NEWMAN
- PIKESVILLE, MD, USA

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