How to Antique Finish Brass and Bronze

Pour vinegar or saltwater on the brass or bronze. Wipe it all over the metal and let the vinegar or saltwater stay on the metal for an hour. Wipe the solution off with a dry rag.

Pour ammonia on the brass or bronze. Let it soak in the solution for two hours. Clean the brass with a dry towel.

Prepare a diluted solution. Pour 1 part antiquing solution to 10 parts room temperature water in a large ceramic bowl. Submerge the brass or bronze in the solution and agitate it to remove air bubbles. Leave the metal in the solution for one hour, then rinse it under hot water. Dry it with a rag.

Heat tap water. Mix marble dust and the water in a large bowl. Use a soft cloth to scoop the mixture into a rag and scrub it into the brass or bronze. Rinse the metal with distilled water. Use a soft brush to clean the paste out of the cracks, and let it dry.