[TheForge] sealing copper pee patina

[lee robbins]

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


From: "Peter Hirst" <saltydog335 at aol.com>
Subject: Re: [TheForge] coloring copper On , and OT
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Message-ID: <024001c87321$dc34c520$6500a8c0 at Codfish>
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Pee on it.  I'm not kidding.  There is a tradition
among European
 roofers of 
keeping a bucket of urine handy when completing a
copper roof,  Gets
 brushed 
on as a final finish.

Keziah
There is no such a thing as a durable patina on
copper.  They are all 
thin, frail, and will not stand up to any abuse.  Many
of these
 finishes 
are flaky and unless protected with, say, wax they
will not last even 
indoors.  They won't last for beans outdoors.

lee robbins wrote:
> Is there a relatively benign way of getting a
durable
> copper green oxidation on demand short of the
toxicity
> sulfuric acid?  
> 
> Lee Robbins 
> Flying tortoise 
-- 

	-Andy V.




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