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Green stuff on brass

I just acquired a brass bucket made in 1865 and it has heavy tarnish plus some green stuff at the bottom. I have tried some commercial cleaners, mustard with salt, etc. with no success. Any ideas about how to get the green stuff off?

Eduardo Barrera
UTEP - El Paso, Texas

I think muriatic acid ⇦ on eBay or Amazon [affil link] will remove this (assuming it's oxidation of the brass and not some foreign substance). But acids are dangerous to work with, and demand gloves, googles, and more attention than most people will give.

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

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