How To Oxidise Copper Sheet

Using the fumes of household ammonia to oxidize metal is really quite easy and is an inexpensive way to oxidize copper and brass.

How to oxidise copper sheet.

Basic products like vinegar and salt can have the same effect. Some authorities claim that heating the copper to a working temperature gives best results. Be careful not to burn yourself. Spray the patina on the clean oil free copper and let set for 2 or 3 hours to dry then repeat 3 or so more times until you get what you want.

As a simple project to test out the process use vinegar and salt to oxidize pennies. Spray the copper with a solution of salt water and then place the copper in a container that contains non detergent ammonia. To see the birdhouses i built check out this video. Most harsh substances are capable of oxidizing copper but you don t need to buy special acids just for that.

The copper should not be touching the ammonia liquid but should be raised above it. While in the bowl the dull pennies will start to brighten up as their copper oxide layer is removed. Prep your copper piece by cleaning it and then spraying it with window cleaner. Place pennies in the bowl for several minutes.

You can also soak sawdust with the patina and pack it around the copper piece and seal it in a plastic bag for a day or 3. The sealed container will trap ammonia vapors that will then make contact with the copper. To oxidize copper begin by scrubbing the copper with an abrasive pad and water. Here s one way to force oxidize copper.

Try the solution on a small bit of copper before proceeding. This can be done with a small handheld butane torch like those used for plumbing. This will help to achieve an even patina so skip this step if you want something more patchy. Apply the los carefully and watch the reaction to the copper.

Then spray on a coat of patina cocktail and leave alone to air dry. To quickly oxidize your copper the best mixture involves one cup 24 liter of plain white vinegar 3 4 cup 18 liter of household ammonia and 1 4 cup 19 liter of table salt. Mix the ingredients into a spray bottle for easy application and shake it up to mix the ingredients thoroughly. Mix up a solution of white vinegar and salt in a bowl.

All you need is enough amount of these products to submerge your copper item for a certain period.