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Metal art acid painting/finishes

We use a plasma cutter for metal art work. I wanted to know how make to get a kind of brownish, bronze, different color using acid and how to seal those colors on the metal.

Thanks.

Dianne Petty
Metal Art - sulfur Bluff, Texas
2007

True patinas and colorations involve reactions with the base metal, Dianne. In turn, that means that any proposed answer depends on what the base metal is. Aluminum? Brass? Thanks.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2007

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