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Offline Homefire
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« Reply #10 on: April 23, 2011, 09:45:38 pm »
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I just warned someone yesterday about tumbling Copper with Claded silver coins.

It sets up a Eletroliysis between the different metals and the Copper Wins.

The Silver coins come out Orange.

I'm sure it would do the same to Nickels.

Nickels can come out of the ground Orange looking some times. 

 Tongue

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Offline CyberborikuaTopic starter
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« Reply #11 on: April 23, 2011, 10:32:19 pm »
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Quote:Posted by homefire
It sets up a Eletroliysis between the different metals and the Copper Wins.

The Silver coins come out Orange.

I'm sure it would do the same to Nickels.

Nickels can come out of the ground Orange looking some times.


I removed a heavy coat of dirt and algae from a Mercury with electrolysis, but it didn't affect the coin. However, unlike nickel, silver is not a too reactive element. I am under the strong impression that my theory that free copper cations from the negative copper wire electroplated the nickel is very probable. If that's the case, I'd have to revert the electroplating or just leave the Buffalo copper-plated (weird). Embarrassed

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Offline GoldDigger1950
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« Reply #12 on: April 23, 2011, 10:49:34 pm »
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And the mystery of the pink buffalo nickel deepens. I'm pulling for you to have that retirement piece there!

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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
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« Reply #13 on: April 24, 2011, 09:55:35 am »
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I've used this to clean some things other then silver.

Give it a try.

I would but don't have any pink nickels to try and I really don't wish to make any in the tumbler.  LOL!

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Offline CyberborikuaTopic starter
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« Reply #14 on: April 24, 2011, 11:41:57 am »
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Thanks Homefire  Great Those are cool experiments. I certainly tried the aluminum and salt for silver. I see that with baking soda it works much better and faster. Back to the Buffalo, the thin layer of copper is slowly but steadily dissapearing in the tumbler and the other nickels are not picking it. I accidentaly did something funny with that nickel, which I would not regret doing on any ordinary nickels, but certainly not on a buffalo nickel, one of my favorite nickels.  Violent

Posted on: April 24, 2011, 11:30:17 AM
Quote:Posted by GoldDigger1950
And the mystery of the pink buffalo nickel deepens. I'm pulling for you to have that retirement piece there!


Not a bad idea! Interesting conversation piece indeed.  Wink

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« Reply #15 on: April 26, 2011, 08:13:17 pm »
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Homefire, while I keep experimenting with my not so orange now buffalo, why is that coins come out orange with electrolysis. I don't recall to have read anywhere that that happens. The anode used is a stainless steel spoon, the solution is just dissolved salt. Why do coins turn orange as though they have a copper layer. I know that is just a false patina, but it is annoying  Violent

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« Reply #16 on: April 26, 2011, 08:34:00 pm »
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If you tumble them together, you have two dissimilar metals.   Two dissimilar metals in a acid or alkaline solution works as a battery and copper will migrate from the pennies to the nickel.  Tap water has chlorine in it and provides the alkaline.  Some soaps have enough citric acid in them to do the job.

If the nickel came out of the ground, over the years stuck to the pennies would have done the same thing.   No ground is PH neutral unless treated.

All will be High or Low PH!

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« Reply #17 on: April 26, 2011, 10:20:07 pm »
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Quote:Posted by homefire
the nickel came out of the ground, over the years stuck to the pennies would have done the same thing.   No ground is PH neutral unless treated.


I see. No doubt about it. Both nickels stuck to the pennies for so many years had thick copper oxide coats that almost covered them. The electrolysis then maybe freed the copper oxide from the nickels, but also created and freed copper cations  into the solution that immediately plated the nickels. I was able to remove the copper layer with electrolysis but using a Copper-II Sulfate solution. The copper coat was removed and attached to the anode. The coin turned black and gained a thin black coat. I put the nickel back into the tumbler to remove the black coat. It is working! I'll show the pics tomorrow  Cheesy

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« Reply #18 on: April 26, 2011, 10:25:37 pm »
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Cool beans!    Cool



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« Reply #19 on: April 27, 2011, 06:51:28 am »
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Quote:Posted by homefire
Cool beans!


Sad  Cry The copper coat is gone, but electrolysis took its toll on the nickel. It ate away some of it. The date is gone, some other details as well.  Angry . That buffalo was cursed and destined to be ruined. That's the end of it.

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