Aluminium anodization

Metal parts can be colored in the strangest ways. When we speak about aluminium, Apple is able to produce extraordinary hues on aluminium covers. As a matter of fact, they are using an anodization process which oxydizes the surface of the metal to create small pores to receive color pigmentation which will become nearly impossible to remove.

This video from Bill Hammack explains it all in details.

Lien YouTube

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