(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 layer is more weather resistant, or if proper
sealing is more important (which is what I would expect).
hannes
--
hannes kühtreiber
[EMAIL PROTECTED]
http://www.datenmull.at.tf
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