Hi Hannes,The pre-anodised aluminium sheets that I have used go by the trade name of Gedakop in the UK. The manufacturers anodise aluminium sheets (of various thicknesses) by the normal methods but don't seal the pores. They apply a photoresist layer and then put on a black protective plastic
(german) wikipedia states that the process of hard anodizing uses
cooled electrolytes, so much higher current can be used. usually the
protective layer is 25-50µ, half of which adds to the thickness of the
piece.
with very pure alloy layers of 200µ can be produced.
I wonder if the thicker
John (D),
you talk about pre-anodised sheets with photoresist applied. is this
anodising applied or removed by a photographic process? how does it
work? how do you make the color change?
sounds like a very intresting material for our purposes!
hannes
--
hannes kühtreiber
[EMAIL
