Make a hollow penny, or two slices of penny-shell foil!

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Konnrade
↑↑↓↓<--><-->BA

Registered: 09/13/05
Posts: 13,833
Loc: LA Suburbs
Last seen: 3 years, 5 months

Make a hollow penny, or two slices of penny-shell foil!

#7144821 - 07/08/07 03:37 AM (19 years, 3 months ago)

Since pennies are copper plating over a shell of a much more reactive metal, you can expose the inner metal, submerge in acid, and leave only the copper!

http://www.popsci.com/popsci/how20/0091804df3c83110vgnvcm1000004eecbccdrcrd.html

(the all-zinc penny in the center required the skills of a chemist and a lot of cyanide)

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I find your lack of faith disturbing

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pB0t

Registered: 04/25/03
Posts: 2,556

Re: Make a hollow penny, or two slices of penny-shell foil! *DELETED*

[Re: Konnrade]
#7144852 - 07/08/07 03:48 AM (19 years, 3 months ago)

Post deleted by pB0t

Reason for deletion: .

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LosAngelesGraff
Ca Shroomite

Registered: 06/09/06
Posts: 7,047
Loc: Califas

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Konnrade]
#7144914 - 07/08/07 04:03 AM (19 years, 3 months ago)

i didnt know that. trippy picture. could you do with the metal in the middle?

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Gumby
Fishnologist

Registered: 06/13/01
Posts: 26,656

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Konnrade]
#7144955 - 07/08/07 04:20 AM (19 years, 3 months ago)

I've been doing that for a long time. Sand one edge of a penny, throw in some vinegar and hydrogen peroxide. H2O2 catalyzes the reaction. If you have HCl, it'll go a lot faster. Pennies prior to 1965(?) are mostly copper so they won't work. They end up turning the solution blue, which I assume is Copper (II) acetate.

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truekimbo2
Cya later, friends.

Registered: 12/08/02
Posts: 9,234
Loc: ny

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Gumby]
#7145040 - 07/08/07 04:57 AM (19 years, 3 months ago)

as an added bonus, it costs slightly more to make a penny than a penny is worth! you're taking money out of war spending every time you destroy one.

fuck you federal government!

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Konnrade
↑↑↓↓<--><-->BA

Registered: 09/13/05
Posts: 13,833
Loc: LA Suburbs
Last seen: 3 years, 5 months

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Gumby]
#7145126 - 07/08/07 05:27 AM (19 years, 3 months ago)

have to get pennies later than 1982... and fuck, I just use HCl. Then again I always have a bottle of it anyhow.

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I find your lack of faith disturbing

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psilosaurus
Stranger

Registered: 09/04/06
Posts: 91
Last seen: 19 years, 1 month

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Konnrade]
#7145604 - 07/08/07 11:02 AM (19 years, 3 months ago)

The reaction also releases a small amount of hydrogen gas, maybe try that with 30 pennies and collect the gas in a baloon. It makes for a big boom.

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Apollyphelion
Dungeon Master/Princess(1009)

Registered: 03/15/07
Posts: 16,757
Loc: Festival of Deaths

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Konnrade]
#7145612 - 07/08/07 11:05 AM (19 years, 3 months ago)

Money is the only thing people usually dont'g get mad at you if you litter it.

That's pretty neat though!

I have Rx names!

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Prisoner#1
Even Dumber ThanAdvertized!

Registered: 01/22/03
Posts: 193,665
Loc: Pvt. Pubfag NutSuck

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: pB0t]
#7145613 - 07/08/07 11:06 AM (19 years, 3 months ago)

pB0t said:

Is it easy to obtain cyanide?

yes actualy

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California Has Legalized Child Prostitution

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Konnrade
↑↑↓↓<--><-->BA

Registered: 09/13/05
Posts: 13,833
Loc: LA Suburbs
Last seen: 3 years, 5 months

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: psilosaurus]
#7147847 - 07/08/07 09:14 PM (19 years, 3 months ago)

psilosaurus said:

The reaction also releases a small amount of hydrogen gas, maybe try that with 30 pennies and collect the gas in a baloon. It makes for a big boom.

Dip a needle in some 30% H₂O₂ and poke the baloon with it :evil:

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I find your lack of faith disturbing

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Asante
Big Moissanite shill

Registered: 02/06/02
Posts: 92,974

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Konnrade]
#7150055 - 07/09/07 08:11 AM (19 years, 3 months ago)

Quote:

Dip a needle in some 30% H2O2 and poke the baloon with it

With a mechanism, ofcourse. At close distance, a balloon full of hydrogen can rupture ear drums.

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Konnrade
↑↑↓↓<--><-->BA

Registered: 09/13/05
Posts: 13,833
Loc: LA Suburbs
Last seen: 3 years, 5 months

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Asante]
#7150336 - 07/09/07 10:29 AM (19 years, 3 months ago)

Meh, I'd just put the thing on the end of a meterstick with some foam earplugs in.

I'm sure that TOOL concert in LA did more damage than I'd get from the explosive luftballon

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I find your lack of faith disturbing

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psilosaurus
Stranger

Registered: 09/04/06
Posts: 91
Last seen: 19 years, 1 month

Re: Make a hollow penny, or two slices of penny-shell foil!

[Re: Asante]
#7150355 - 07/09/07 10:37 AM (19 years, 3 months ago)

Yes, definately be careful if you do this. I suggest tying a long string to the balloon and let it float to the ceiling, light the string and back away.

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