Hi Jack!

Here's something I found:

      Green Patina Formula:

      2 parts
     white vinegar
      1 1/2 parts
     non-detergent ammonia

      1/2 part
     non-iodized salt


      Application:
        a.. Clean fixture with Windex-type cleaner.

        b.. Premix patina solution in Windex-type spray bottle
        c.. Spray Windex cleaner on fixture to break surface tension, 
leaving it on when you apply patina solution.
        d.. Apply patina solution by spraying onto fixture, preferably in 
the early evening on a high humidity night.
        e.. Allow to set for 1 hour, then reapply solution observing where 
you missed applying on the first coat. If there seems to be oil that is 
repelling the patina solution, clean it off with the Windex cleaner.
        f.. Allow to sit overnight. In low humidity desert areas, use a 
plastic bag to create a tent over fixture (without making contact with it) 
to help keep the humidity high during curing. If there is low moisture in 
the air, the solution will dry out without creating the patina effect.
        g.. The result will be a bright green powdery patina. Do not rub 
off. In time (and re-applications) this finish will become permanent. The 
brightness will fade with time. To reduce green, cut back on the salt 
content. Color and effect is greatly affected by application ambient 
temperature and humidity.
      back to top

      Darkening Copper & Brass (penny brown):
      Brown Patina Formula
      Hot Water
      Baking Soda
      Place the hot water in a bottle. Add enough baking soda until it will 
not dissolve anymore when shaking the bottle.

      Application:
      Same as Green Patina. This finish is not as powdery and will not need 
as many re-applications


Steve

----- Original Message ----- 
From: "Jack Olson" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, February 16, 2008 12:30 PM
Subject: [TN] NTC: Tarnishing Copper


> Does anyone know how to make copper tarnish FASTER?
>
> (I want to make a wire sculpture look older)
>
> Saturday project.... Jack
>
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