![]() This is a good way to clean up detailed items, where mechanical polishing could cause damage. ![]() In short terms it turns the surface metal back to its original state by removing only the compounds that reacted with it in the first place. The electrochemical way of removing tarnishing, that we use here, is gentler in this respect. This can be seen on old silverware, where the patterns and engravings are usually rounded and have lost detail. Any such mechanical polishing removes some of the metal every time you do it. One way to remove tarnishing is to use abrasives like sand paper or polishing creams. Sometimes, however, we wish to remove this tarnishing, like in the example of the bronze handle pictured here. ![]() This is the effect that protects statues, and roof cladding that are exposed to the elements for centuries. The tarnishing actually preserves the metal below by sealing it in, so it can not react further with the surroundings. This can be oxygen, sulfur compounds, carbon compounds or chlorides. The method is simple, and leaves you with a nice clean item without having to do much work.īrass, bronze and silver tarnish because the metal reacts with compounds in the surroundings. I have used it quite a bit to clean up boat hardware and items I have picked up while diving. ![]() This is a easy way to electrochemically clean up brass, bronze and silver items that are badly tarnished.
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