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uthminsta
1000+ Penny Miser Member
USA
1872 Posts |
 Posted - 11/11/2009 : 16:42:03
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Hey I read somewhere here about how to remove the copper plating from zinc cents. And now I'm looking around for over an hour and I can't find it again. I'd really like to do this...
Just a matter of curiosity. I want to encapsulate a raw zinc cent in an air-tight case and see how long it stays bright. And leave another in open air and see how quickly it turns nasty.
Any help?
Aaron
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Kurr
1000+ Penny Miser Member
2906 Posts |
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uthminsta
1000+ Penny Miser Member
USA
1872 Posts |
Posted - 11/11/2009 : 17:05:27
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Some sort of acid and, I think, lemon juice, and a small electric current. It was just last night I read this! It's driving me crazy not being able to find it!
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sheba
Penny Pincher Member
USA
191 Posts |
Posted - 11/11/2009 : 17:13:08
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I can't help you on the way to remove copper from the Zincolns, but I did find a Zincoln (can't remember the date....1998 I think) that was a bona fide mint error. Oddly enough, not long after that I found another 'all zinc with no copper'. It looked strange to me, having already found the 'real McCoy'.
I did just a bit of research and learned that there is a way to remove the copper coating, however the zinc coin surface will be dull rather than shiny like a true mint error. And sure enough, when comparing the two, the 'real McCoy' was just like BU coin, very shiny silvery color while the 'fake' was very dull ... a flat, matte finish on the fake error coin.
Haven't found any more since, but sure would be happy to find another true 'copperless coating' Zincoln  !
sheba |
woof ... wag ... whine |
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Kurr
1000+ Penny Miser Member
2906 Posts |
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jadedragon
Administrator
Canada
3788 Posts |
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Dumpster Diver
Penny Collector Member
USA
474 Posts |
Posted - 11/11/2009 : 18:11:10
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jadedragon I like your comment on his page...
He makes it sound like with a little hard work it will be a piece of cake. |
"You're not really gonna throw that out...are you"? |
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toomuchcopper
Penny Collector Member
USA
406 Posts |
Posted - 11/11/2009 : 18:25:50
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| not sure if i understand completely but you can dissolve the zinc with muriatic acid, just etch the edge of the coin with some sandpaper and immerse it in muriatic acid until it floats (5-6 hours) this will leave you the copper thin coating with the zinc eaten out of it, I dont think its possible to do the opposite but if it is i would like to try it. |
visit www.crazycoinguy.com
for information on how to sort, what to sort, and sorting equipment. We also sell copper pennies in bulk, and other coins. |
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uthminsta
1000+ Penny Miser Member
USA
1872 Posts |
Posted - 11/11/2009 : 21:40:08
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This article for dissolving the zinc out with muriatic acid sounds really cool, and I think i will try that.
But what I am asking is how to do the OPPOSITE of that. Someone posted that you can put the cent in a particular solution and add an electric current, and it will soften the copper, to the extent that it can essentially be "wiped" off, leaving a zinc core. THAT is what I want to try.
Surely someone remembers reading that post... The focus of the post was something of the sort that after removing all the copper from zincolns, you could incinerate all the paper towels that you use for wiping the coins, and you would be left with a small amount of copper. |
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removing copper plating from zinc cents?
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