There s no such thing as alchemy—magically changing common chemical elements into rare and valuable ones—but water plating is possibly the next best thing. The idea is to use electricity to coat a relatively mundane metal, such as copper, with a thin layer of another, more precious metal, such as gold or silver. Water plating has lots of other uses, besides making cheap metals look expensive. We can use it to make things rust-resistant, for example, to produce a variety of useful alloys like brass and bronze, and even to make plastic look like metal. How does this amazing process work? Let s take a closer look!

Plastic water plating involves passing an electric current through a solution called an electrolyte. This is done by dipping two