Chemical Etching: A Popular Aluminium Anodising Pre-Treatment Process


Standard anodised aluminium, which is a main product of companies such as Badger Anodising, is a curious thing. For one, aluminium itself is already somewhat corrosion-resistant per se (thanks to the natural formation of aluminium oxide that essentially acts as a “shield”). However, the process of anodising itself makes the material so much more resistant to the elements, essentially making it nigh “invulnerable.” Furthermore, anodising is far from the only chemical processing aluminium may undergo.

Indeed, there are numerous other processes that aluminium can go through before being anodised. One such process is called etching. Derived from the German word which means “to eat,” etching (also known as metal etching, chemical milling, etc.) is the process of cutting into a metal surface using acid. Metal etching is a common industrial manufacturing technique, though it is also an artistic technique European masters such as Albrecht Dürer and Rembrandt, to name a few, have utilised.
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