The aluminum sheet is actually alclad which has a thin coating of pure
aluminum over the aluminum alloy sheet to prevent corrosion.  If one uses
sandpaper, you remove the clad and over time the exposed alloy will
corrode,
even under paint.
Dick
-----Original Message-----
From: Larry <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Friday, June 02, 2000 7:54 AM
Subject: Re: [COUPERS] Painting


>If you want it to stick, you gotta rough it up.  We always used scotch
brite
>Larry

>Dick Chevalier wrote:
>> Don't touch the aluminum with sandpaper!


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