Last Updated: 11/17/2008
Ferric Chloride... 1 tsp [MORE INFO]
Ferric Nitrate... 1/2 tsp [MORE INFO]
Distilled Water... 1 pint
This old Italian formula produces a rich brown patina.
Apply evenly with a brush, sponge, or sprayer and let it dry. When a light brown rust color appears rinse well with cool water.
Dry with newspaper - it is very important to use newspaper. You may want to use a slightly damp paper.
Burnish the surface with steel wool or wire brushes. Leave over night
Repeat the process for darker result.
When finished, wax over the patina to darken and set the color.