Rinse with water and dry. These mixtures work because the acid in the vinegar or lemon juice strips the oxidized patina from the copper and the salt acts as a mild abrasive to remove the grime.

How do you get brown patina off brass?

A combination of vinegar and salt will create a traditional, chestnut-brown patina. A combination of nitric acid and copper sulfate will produce a much more pronounced, dark finish. Household bleach will remove some of the harshness and shine from the finish while keeping the brassy color.

Can you remove patina?

Patinas can be easy to remove if you know how to do it the right way. Some of the best rust removers for metal are made from ingredients you can find in your kitchen, such as vinegar, baking soda, potatoes and salt. … Green corrosion can also be removed with lemon juice, baking soda, salt and vinegar.