SV: Re: SV: Re: Re: [sdiy] Matrix FX BBD delay part update

[jhaible at debitel.net]

> The more common English word is "Anodised".  (But also "Electroplated" 
> is the same thing.)

Oh yes, that sounds familiar.
It's a process of crating a thick oxide on top of the metal
with electric current, the metal being submerged in an electrolyte.
(A thin oxide would be created naturally, just from being
in free air). I don't know how they make the different colours,
though. (Natural aluminioum oxide is transparent.) Different metals
in the electrolyte, maybe?
Anyway, the price difference for natural coloured or various colours
seems to be minimal in anodised aluminium.
Ironically, black (or any dark colour) anodised fronpanels turn
out a lot less expensive, because you don't need any paint in the
grooves that are machined out for lettering. So you get silver / grayish 
lettering on black background, without the time consuming process
of applying paint. Can make a difference of 200 Euros on a huge panel!

JH.


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