Today's Message Index:
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1. 07:10 AM - Re: Aluminum Sheet Discoloration (Carlos Sa)
2. 08:09 PM - Re: Aluminum Sheet Discoloration (Tim Kiehl)
Message 1
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| Subject: | Re: Aluminum Sheet Discoloration |
While I don't think that's an issue, I would ask ZAC.
I would also see if scrubbing with scotch-brite removes the discoloration.
Welcome back
Carlos
CH601-HD, plans
On 1 February 2013 22:43, NCG27 <randyebryant@gmail.com> wrote:
>
> Been on 'layoff' from building due to job issues, marital issues...etc.
> Trying to get back going. I"m building from plans only. My aluminum sheets
> have been in storage for about 5 years. They have gotten moisture between
> them. They are discolored. It's not a powdery substance on them.
>
>
> Just looks like discoloration. Are these sheets still good to use or will
> I need to buy more?
>
>
Message 2
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| Subject: | Aluminum Sheet Discoloration |
this is most likely a thin film of aluminum oxide and a very mild acid (lik
e vinegar and cream of tartar mixture NOT muriatic etc.) should help remove
the stain. Polishing may be necessary afterwards. (I have a BS in chemistr
y)
ALCLAD plates have a thin coating of pure aluminum pressed into the surface
and is a slight oxide is supposed to form to protect the alloy underneath
but other alloys do not have this pure aluminum coating so the other metals
in the alloy are exposed and can oxidize and cause staining.
Timothy A. Kiehl
emergeART623-252-6484
http://www.emergeART.co
http://www.facebook.com/emergeART
http://tim-kiehl.fineartamerica.com
=93The universe is found art =85 from chaos emerges beauty=94
From: carlossa52@gmail.com
Subject: Re: Zenith601-List: Aluminum Sheet Discoloration
While I don't think that's an issue=2C I would ask ZAC.
I would also see if scrubbing with scotch-brite removes the discoloration.
Welcome back
Carlos
CH601-HD=2C plans
On 1 February 2013 22:43=2C NCG27 <randyebryant@gmail.com> wrote:
Been on 'layoff' from building due to job issues=2C marital issues...etc. T
rying to get back going. I"m building from plans only. My aluminum sheets h
ave been in storage for about 5 years. They have gotten moisture between th
em. They are discolored. It's not a powdery substance on them.
Just looks like discoloration. Are these sheets still good to use or will I
need to buy more?
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