How To Darken Copper Sheet

Add baking soda to hot water until it will no longer dissolve and fill spray bottle with this darkening solution.

How to darken copper sheet. Spray the copper with window cleaner then coat the item with the aging compound. Bake in the oven for an additional hour. Afterward remove the item from the container and place it on the cooking sheet. The yolks of hard boiled eggs can produce sulfur and related chemicals that react with the copper to change the color to a darker brown or black.

Use two or three eggs for copper jewelry or more if you have. While this method will take longer and may not produce as dramatic results as using liver of sulfur you do not need any equipment other than hard boiled eggs and a sealed container step 2 hard boil two or more eggs. After about an hour remove the item from the plastic and apply the patina again. Spray item with darkening solution.

Do not touch the surface that you want to patina. Apply patina solution by spraying onto fixture preferably in the early evening on a high humidity night. Place the object into a plastic bag to create humidity. Pour about one inch of ammonia into a pint or quart size glass jar.

Darken copper with brown patina clean item with a clean lint free rag dampened with clear grease cutting household cleaner. You may want to leave the brass in the oven for longer depending on the look you want. Allow to set for 1 hour then reapply solution observing where you missed applying on the first coat. Step 1 use this method for easy relatively minor adjustments.

Spray windex cleaner on fixture to break surface tension leaving it on when you apply patina solution. In a spray bottle mix an aging compound out of vinegar household ammonia and table salt.