Electropolishing

Electropolishing is an electrochemical process similar to, but the reverse of, electroplating. The electropolishing process smoothes and streamlines the microscopic surface of a metal object. As a result, the surface of the metal is microscopically featureless, with not even the smallest speck of a torn surface remaining.

In electropolishing, the metal is removed ion by ion from the surface of the metal object being polished.

Smoothness of the metal surface is one of the primary and most advantageous effects of electropolishing.

It may be used in lieu of abrasive fine polishing