User can create, shape and manipulate corroded metals and the process of corrosion: the electrochemical oxidation of metals in reaction with an oxidant such as oxygen and water, with rusting (formation of iron oxides) being a well-known example. This type of damage typically produces oxide(s) or salt(s) of the original metal and it degrades the useful properties of materials and structures including strength, appearance and permeability to liquids and gases.