OldTools Archive

Recent Bios FAQ

249563 Paul Fowler <paulf1944@g...> 2014‑07‑27 Oxidizing non ferrous metals
Ururine + time and / or heat...
249564 scott grandstaff <scottg@s...> 2014‑07‑27 Re: Oxidizing non ferrous metals
You already had it.

  Just use instant patina from the glass house, and leave it alone.

  Sure its only skin deep and you can buff it off easy.
   But just leave it alone, and let it work.

  In the proper number of months, or years, you will have the real 
patina back.
  Meanwhile the instant patina, liver of sulphur, is kind of like 
starter yeast.

   I have made "dark gray" which is the proper term from liver of 
sulphur color,
on many articles, both ferrous and non ferrous alike.
  The tricks are................
    #1  Cleaning.
         The article has to be clean beyond sanity. That includes you 
and your filthy sink. heh heh

    Then apply the solution, leave on for no more than one minute, then 
rinse it back off with clean water, thoroughly.
  Examine and look for "holidays" (this means places the solution omitted)
and clean with steel wool that is degreased,

#2 Repetition.

   Do this until you are satisfied.

  So, go again.

  Do not remove your rubber gloves while you do this.
     The worst scuzzbucket in the room, is you.
You are not allowed contact with the metal for now.

  You take your gloves off and fondle it when you are done.

   See the whole story here. Just substitute whatever metal you are 
working on now.

      http://ww
w.thegaragegazette.com/index.php?topic=8183.0

    yours Scott

-- 
*******************************
    Scott Grandstaff
    Box 409 Happy Camp, Ca  96039
    scottg@s...
    http://www.snowcrest.n
et/kitty/sgrandstaff/
    http://www.snowcr
est.net/kitty/hpages/index.html



-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4716 / Virus Database: 3986/7927 - Release Date: 07/26/14
249595 CGRAF <adveniam@a...> 2014‑07‑29 Re: Oxidizing non ferrous metals
Just a suggestion. Look heavily into the chemistry.
The greens and blues are not products of oxidation.

Oxidation can be done. For me heat is the medium. Any way of combining 
oxygen with the metal will work.

Greens and blues are salts for the most part, usually sulphur or chlorine.

Blacks are usually sulphides.

I believe I have the terms right, it has been a long time since I 
actually thought about what was happening. General rule is the slower 
the process , the more fixed the patina.

To help understand the above gibberish get a good high school chemistry 
book.

Mike Graf
249596 Michael Blair <branson2@s...> 2014‑07‑29 Re: Oxidizing non ferrous metals
For a good look into verdigris (technical name for the blue
to green stuff on copper, brass, and bronze) check out:

http://en.wikipedia.org/wiki/Ve
rdigris

Interesting history.  It seems that it isn't just one thing,
but can be copper carbonate, copper chloride or copper acetate.

Funny enough, the picture of the Statue of Liberty calls the
green color an example of oxidation.

Mike in Sacto

Recent Bios FAQ