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Anodizing is the process of depositing a thin synthetic oxide film on a light metal to improve resistance to corrosion or to improve surface hardness. This process is typically used on niobium, titanium, and aluminum. Different alloys anodize differently resulting in color variations. Depending on the process used to achieve this effect, the final surface is the second hardest substance in the world. It is used for many different devices, including pressure transducers, aluminum wire, extreme sports equipment, and cookware like Dutch ovens. After the process is complete, color dyes can be added to the metal.

The process itself is relatively similar to electro plating. While it is often completed in industrial settings, it also works well for the home user. Before the process itself can begin, though, the object to undergo the treatment must be clean. To make the process a success, not a single fingerprint can remain. It begins when the metal to undergo anodizing is connected to a negative terminal with a wire. The other metal is connected to a positive terminal with a wire. They are then immersed in an acid bath. The entire process can take up to an hour. When complete, the item is rinsed and a sealant is applied. The porous surface of the newly anodized layer allows for the product to be colored.

Anodizing fits well with current environmental laws as it is a very environmental friendly process. However, while anodizing is a relatively safe process, most industrial settings employing the method must take precautions like dust collecting systems to ensure the safety of workers. At any rate, anodizing has made materials like aluminum the most widely used in the creation of household and industrial products because, whether you need basket anodizing for small parts like washers or large-scale coverings for satellites, it is one of the best finishing options in the industry.