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Post subject:Finishing Metal
 Posted: Sep 12, 2005 - 07:52 PM #3665
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Joined: Jan 08, 2005
Posts: 8
Location: Sioux falls, South Dakota
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 Hi all,was wondering what to use to speed up the patina process on my copper projects.Bird houses,weather vains,ect. Winters here leave me with alot of down time, tring to figure something cool to make for extra $$ Opps,back to the patina question. Looking for something cheap, if thats possible, or the OLD SCHOOL way. I've gottalottalearnin'todo.Thanks |
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Post subject:RE: Finishing Metal
Posted: Sep 16, 2005 - 09:29 PM #3691
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Joined: Sep 16, 2005
Posts: 2
Location: Eugene, OR
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I seem to recall somewhere that the "old school" way of getting a good patina on copper was to use hot cow's urine.  Not sure that I'd want to go that route, but a sculptor friend who works in bronze swears by it.
I believe that the green patina that occurs naturally is largely copper carbonate. However, an attractive green patina can be created using dilute muriatic acid to produce the chloride. |
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Post subject:RE: Finishing Metal
Posted: Sep 19, 2005 - 01:11 AM #3701
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Power User
Joined: Feb 29, 2004
Posts: 117
Location: Midwest, USA
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Post subject:RE: Finishing Metal
Posted: Jul 17, 2008 - 05:32 PM #7733
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Joined: Jul 17, 2008
Posts: 2
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brasstuba wrote: I seem to recall somewhere that the "old school" way of getting a good patina on copper was to use hot cow's urine. Not sure that I'd want to go that route, but a sculptor friend who works in bronze swears by it.
I believe that the green patina that occurs naturally is largely copper carbonate. However, an attractive green patina can be created using dilute muriatic acid to produce the chloride.
And how does one obtain the "hot cow urine?" |
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