[TowerTalk] to anodize or not to anodize

[jimlux]

Michael E Fox (N5MEF) wrote:
> I need to know whether or not to have the aluminum panels I'll use for a
> lightening arrestor bulkhead and for a grounding/bonding bulkhead anodized.
> 
>  
> 
> It would sure make it look better.  But since anodizing is a process which
> actually creates an oxide layer, I'm thinking that it will actually serve to
> reduce electrical conductivity when, in fact, I want it to be maximum.
> After all, that's why we use products like Noalox, etc., right?
> 
>  
> 
> So, just to check my thinking:  I believe I should use non-anodized
> aluminum, clear any oxide where I will make connections, use Noalox on those
> connections, and let the rest anodize on it's own.  Correct?
> 
>  
>

You're right, although you can sand off the anodization where you're 
making contacts.

The other alternative is a surface passivation like iridite, which is 
conductive.

Or paint.(with scraping/sanding under connectors)