[TheForge] sealing copper pee patina

[Peter Hirst]

I am not so sure about copper patinas not being permanent.  You se a lot of 
copper roofs that stay a nice green indefinitely, (St Matthews cathedral in 
DC, for an AMerican example) and I am sure no one is up there periodically, 
uuh, renewng the treatment.  I have a commper sculpture in my shop yard that 
was treated in this way that has remained stable for years.   Bears more 
research, I think.


----- Original Message ----- 
From: "Woolley" <wjec at verizon.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Wednesday, February 20, 2008 9:00 AM
Subject: Re: [TheForge] sealing copper pee patina


> lee robbins wrote:
>> Thanks for the copper info. i wondered about the
>> patina after the cat pee information on steel. I just
>> got some tung oil for my tool handles and have a
>> memory of someone using it on steel. Will that also
>> seal the copper patina more durably than say
>> polyurethane  or wax? Just letter openers.
>>
>> Lee
>>
>>
>>
> I use tung oil on steel.  Multiple coats will help but certainly not as 
> tough polyurethane.  You can wax a tung oil finish.
>
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