Spray-painting a bike frame

Originally Posted by reckon

again GOOD QUESTION, and no need to apologize.

since anodizing is basically controlled oxidation (rust), I would say NO, it would be like painting over rust. now, I have no practical experience painting over an anodized surface (I always had pieces stripped so I could effect a guarantee), this is an educated guess, with a second opinion (I called a friend with 20+ years exp) this would be a great "test panel" situation.

Originally Posted by kakman

Thanks for the reply. So can anodising be removed with simple sand-blasting or, if not, how is it done?

Actually it was in wikipedia I saw the information:
Anodising, is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. On many other metals, anodizing increases corrosion resistance and wear resistance, and provides better adhesion for paint primers and glues than bare metal.


I know nothing about it but I am in the market for a frame which just happens to be anodised. Whilst I have no intent to paint it now, I know I will in the future.

/k