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I need a patina finish on a steel spiral staircase

I am seeking a finish that will make an interior steel spiral staircase look patina-like with shades of brown....what finish and/or acid coat do you use to accomplish this?

PLEASE HELP ME ASAP !

Pam McCroskey
- Denver, Colorado
2005

First of two simultaneous responses --

Goran Budija posted this one awhile back regarding another issue regarding protection of galvanized roofing in letter 34208.

"You can use 20 gm tannic acid ⇦ on eBay or Amazon [affil link] /15 gm phosphoric acid/1 lit water solution (this is simple and cheap rust converter ⇦ on eBay or Amazon [affil link] ). You must lacquer or wax it!"

Marc Banks
- Elizabeth City, North Carolina
2005

Second of two simultaneous responses --

You can use next solution(reddish brown):

15 gm iron chloride

1 lit water or pure alcohol

Paint it(or spray) on well degreased object.Repeat if need.Wax or lacquer it.

Good luck!

Goran Budija
- Cerovski vrh Croatia
2005

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