Hi Guys,
Anodising is the formation of an anodic crust of aluminium oxide on aluminium metal. This occurs naturally and is also built on in one of the processes of A/A badge manufacture. The purpose of anodising is to create a hardened surface to protect the badge and to also allow colour dye to permeate into it thereby providing a base for the dye to be taken up.
Colouring is a totally separate process from anodising and many cock-ups occurred where the badge has been anodised and not coloured and then sealed which prevented the badge being re-coloured. A lot of these badges are sold as 'rare' officers versions and are deemed to be silver although Blind Freddie could tell the difference if placed next to a silver coloured A/A badge.
As far as I know only aluminium can be anodised.
With regard to K+K and A/A badges. All I can say is that I am very disappointed with the level of accuracy in this book and have not used it for any material in my current project. It may be better with non A/A badges but that is a subject that I know nothing about.
Andy - might have a small job for you for the weekend...
Regards
Chris
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