Are you sure that you didn't use some other product? I'm not aware of any
iron in Scotch Brite pads and I have recycled a lot of aluminum using the
product with no issues. 3M claims it will never rust:
Subject: Re: [TowerTalk] best way to shine up an old yagi?
From: "D Calder"
Date: Mon, 12 Jul 2010 13:25:07 -0400
Scotchbrite came back and bit me some years ago. The "metal in it" got in
pits of elements and actually made the antenna
look like it rusted a month later. Even though it wasn't the aluminum, it
the metal in the pad. They make brass pads too.
I had to take it down, use 400 grit to get it out and then clear coated it
it's been up for some time now. It stops it from deteriorating
when you live 900 ft. from the ocean when it's covered with something. I
some that have been up 7 to 8 years and that's a good
bit next to the sea salt.
73 Dave n4zkf
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