Introduction: Make a Ring by Melting Pennies.

!!!Caution!!! Melting pennies will release Zinc Oxide fumes which cause flu-like symptoms including fever, chills, nausea, headache, fatigue, muscle aches, joint pains, shortness of breath, chest pain, and cough. Use a well ventilated area with power assisted ventilation to avoid breathing these fumes.



That being said, this is ring made from pennies. You can smelt the copper coating off leaving you with zinc. Pennies minted after 1983 are all made like this.



You don’t have to have a lathe to do this. You could always hammer the ingot flat and follow the nickel ring instructions. A surprising thing is how lite it is. My wedding ring is the same size weighing 8 grams. This ring weighs in at 3.





Step 1: Smelt

smelt 1 (sm lt). v. smelt·ed, smelt·ing, smelts. v.tr. To melt or fuse (ores) in order to separate the metallic constituents.

I placed 10 pennies on a spoon and heated them with a propane torch. The spoon was held with locking pliers, which was held by a wooded clamp. Once the zinc liquefied I removed the copper with a metal probe (I used a light tester I had near by).

I then poured it into a section of ½” pipe and let it cool off.

Step 2: Cut a Ring Blank

Here I machined the ends off the blank then drilled a hole through it. I chucked the same drill bit into the lathe. Next I wedged the blank on by placing a plastic bag over the bit. Finally the outside was machined.

Step 3: Size the Ring

To expand the blank I hammered it over a pry bar. I started out with a small bar then moved up sizes as the ring expanded. To get to my ring size I eventually had to hammer over a ½ socket bit.

Of course to get your size simply stop hammering once it fits.

Step 4: Polish

I evened out the ring with a file. I then spun it on a ½” socket bit and sanded it with 1000 grit then 200 grit sandpaper.

Lastly I buffed it on a buffing wheel.

Thanks for reading.

Comments

author
JohnathanT7 (author)2017-07-09

Please dot do this, zinc is toxic, the phumes, temps needed to melt it. Constant contact with your skin can poision you. Not to menchen that it tarnishes in a day or two.

author
ZeRandomMan (author)JohnathanT72017-07-10

I totally agree. Don't stay too close close to the zinc because if something happens, you got to be safe. Also, do it outside on concrete.

author

Concrete and molten metal could be hazardous. Concrete stores residual moisture and as the molten metal comes into contact with the concrete it evaporates the moisture causing pockets of steam underneath the still liquid metal that will burst and send hot lava everywhere.

author

Sorry, I meant something that will not harm public areas or your backyard.

Thanks for the reply!

author
JohnN3 (author)2017-07-23

Apparently you didn't realize that melting coins is illegal us the U.S.

author
DanielC795 (author)2017-07-21

just so you guys now I'm pretty sure this is illegal. but I don't care. not making tho.

author
turtlewax (author)2017-07-10

Just smelt the zinc into rods and sell it as sacrificial rods to protect water heaters and home plumbing....

author
brettchallenger (author)2017-07-10

Don't try this with UK "copper" coins, they are made of steel.

author
valveman (author)2012-10-04

I can see other possibilities for melting pennies. Great Instructable!

author

1. Get 1982 or before pennies because they are pure copper.
2. One pennies weight in copper is worth $0.025
3. Smelt Into Ingots
4. Sell for 2.5x the worth of pennies
5. Go to bank with money and get rolls of pennies
6. Repeat

???

7. Infinite Money?

author

I had an out of work friend try that with quarters, half dollars and big dollar coins. Yes, infinite money, but only about 25 cents an hour profit. It takes a while to sort through $1000 dollars of coins to get maybe $1 worth of silver. Much less profit with pennies.

author

Cool! I'll have to remember that. I've found more than 2 dollars in quarters in U.S.A. so far and I've only been here for around a week. Pennies, though are the easily the easiest coin to find on the sidewalk.

author
AnastaciaR (author)AnastaciaR2017-01-26

I found 1981 and a 1970!

author

Provided you have infinite pre 1982 pennies to supply the same supply of copper as the first batch, which you don't.

author

up until they run out of pre 1982 pennies and no guarantee that ull get a role of pre 82 pennies otherwise a good idea

author

Interesting concept, but it would cost more than your profits to melt them.

author

Sure, if your source of smelting fuel (propane, natural gas, etc) is free. I'm not sure, but I'm guesstimating that unless you are doing huge volume in a very large 24x7, always hot, efficient furnace, that is constantly fed, that your fuel costs would eat up your profit. 24x7 because heating a cold furnace is a huge amount of the cost of doing anything involving high temps. So you want to feed it 24x7. Interesting concept though.

author
BambiB (author)mgalyean2016-04-04

Solar oven

author

If you use the HHO method of fuel its not really a problem. A one time investment into a high rate electrolysis machine, batteries and a solar/wind/radiant source of power.
Also every time you do this you gain more material. if you have an ounce of copper and sell that for 2.5 ounces of pennies then smelt that and turn it in into 6.25 ounces of pennies. exponentially you gain for really not cost in the long run, the only contributing factor is time to sort through pennies to get all 1982 or before.

Ps. that first comment i did that started this all was 100% logic, 50% meant as a joke XD

author
Dr Qui (author)demonspawnedangel2012-10-13

you forgot to factor in the price of gas and transport to and from the bank and scrap metal yard.

author

Technically from 1864 on they were 95% copper, the rest being some combination of zinc and tin -- making them bronze or brass, depending on the year... And of course in 1943 they spent a year making cents from zinc-coated steel. Doesn't change your point that the metal value of the brass/bronze cents is around 2.5¢...

author

Did you measure how much you make an hour doing this, including the trip to the bank and the trip to the recycling center?

author
jj.inc (author)demonspawnedangel2012-10-04

what about time, heating costs, tools.

author
astrong0 (author)valveman2012-10-11

LIKE ZINC BUCK-SHOT!!!! :D

author
yrralguthrie (author)2017-07-09

It would be a lot safer to use either discarded copper pipe or even buy a few feet of copper pipe. Or buy copper el fittings. They are cheap. Less that 50 cents in my area. 10 feet of 1/2" copper pipe is about $20. And no zinc oxide fumes.

Don't use copper fittings that have been used as they probably were soldered together with lead solder. And the fumes from melting lead are worse than the zinc oxide.

author
trapshooter4god (author)2017-07-09

This looks awesome I might try to make it

author
SoSam70 (author)2017-07-02

Have you tried coloring them? If so, how?

author
Mb313 (author)2017-01-20

That is really cool!

author
JasonV85 (author)2016-12-09

A zinc ring? Why not wood or plastic? Or better yet, just draw a ring on your finger with a marker! How about lead or cadmium, their fumes are very bad too. Maybe we could fashion one out of sodium or potassium, that'd be a cool show! Why not go radioactive, you can find Amercium 241 in most smoke detectors, bet that'd be sweet. Seriously, zinc fumes are no joke! I'm a welder, I have lots of experience with zinc. It's nasty and will kill you if you get too much.

author
offseid (author)2016-11-03

Great post. Fun thread below.

author
Kathyrose (author)2016-10-13

wow! That is a really cool idea! Beautiful ring too! That would be a cool idea for wedding bands. Use pennies from that year, or the year they met. A baby ring! From year of birth. I know that you can't see the year but you would know. Romantic!??!!!

author
CybrgnX (author)2016-09-08

There is another technique for making small rings. Drill hole into coin, put on tapered metal rod..some files work, and then tap the coin edge with a spoon repeatedly. You will see the coin start to flatten and widen. There is a YouTube on this as well.

author
Tvpc58 (author)2016-06-04

Besides the possibility that the Secret Service will come knocking at your door, lol, this is a fun idea. The ammo reloading hobby has melting furnaces and other casting tools that can be used for this pursuit. See lyman.com, rcbs.com, lee.com, hornady.com. The warning about the hazards of the zinc fumes is valid, it is called Welder's Fever. These rings could be used for slides on Western style "Apache" ties.

author
derickson8 (author)2016-04-30

Holly crud had to scroll down for a min to see the related instructables at the bottom is it right or wrong to fill someone's instructable that was done nicely by the way with unrelated comments ??

author
txcoder (author)2016-04-05

It is not illegal to destroy money in the USA. U.S. currency and coinage is destroyed all the time. For example, when you go to any large tourist attraction you will find machines that press pennies into keepsakes. If this was illegal do you think they would be allowed to exist?

Title 18, Chapter 17 of the U.S. Code prohibits the FRAUDULENT defacing, altering and so on of US coinage. This was a law created because a man plated nickels with gold and passed them off as five dollar gold pieces. It also addresses penalties for people to lighten coinage. People would file off a small amount of gold or silver and then spend the coin. The filings would be sold off later when a sufficient amount was collected.

By rendering the coin unrecognizable, I understand that this could not be taken as fraudulent alteration or mutilation. But you could call the U.S. Treasury Department or Federal Reserve to make sure.

Personally, I don't think I would use zinc or lead to make a ring.

author
haughpf (author)txcoder2016-04-15

It became illegal to melt down pennies and nickels in 2006. It is also illegal to carry more than $5 of the coins with you outside of the country, and to ship more than $100 of them out of the country. A simple google search will inform you of this.

author
CharlyeZ (author)2016-04-12

I wrote the comment to the article.
Admin of the web (or someone like he ) removed it.

author
Moodle2 (author)2016-04-05

I hope you do realize that it is illegal to destroy money in America, because those pennies sure look American.

author
Emma Stewart (author)Moodle22016-04-05

then use Canadian pennies! Our government cancelled the penny and any that you possess are useless now! :-)

author
sconner1 (author)2016-04-04

I cast one like this instead of machining it once. But it will tarnish black if you don't clear coat it.

author
deswiger (author)2016-04-04

Said many ways, but, "the wisdom of a man is not in what he does while being watched but what he does when he's alone..."

Murder is not only wrong but illegal. (but not if you don't get caught)

Theft is not only wrong, it's illegal. (but not if you don't get caught)

Adultery is just wrong. (but not if you don't get caught)

This (but not if you don't get caught) person is not one I would trust as a friend!

author
sbergeron2 (author)2016-04-04

1: Glad you put the disclaimer in there. Zinc poisonong is no joke. I've watched a few of my blacksmith friends become very ill and 1 died from forging on galvanized metals.

2: What you are doing is "Melting" and "Casting". "Smelting" is the processing of raw ore into usable metal.

author
Gadget93 (author)2016-04-04

I had a great idea. It's combining two instructables. This summer, I'll melt many pennies and pour them in to a random ant hill. It will be cool art.

author
yoyolo (author)2014-10-04

use canadian pennies, if you can find any, to avoid zinc poisoning as they do not have any zinc in them.

author
koroliov (author)yoyolo2015-02-03

Composition of Canadian 1-cent coins (from www.mint.ca):

1908 - 1941
95.5% copper, 3% tin, 1.5% zinc
1942 - 1977
98% copper, 0.5% tin, 1.5% zinc
1978 - 1996
98% copper, 1.75% tin, 0.25% zinc
1997 - 1999
98.4% zinc, 1.6% copper plating
2000 - present*
94% steel, 1.5% nickel, 4.5% copper plating

*Note: Since 2000, the 1-cent coin can be produced using either the copper-plated steel or copper-plated zinc compositions.

author
allangee (author)koroliov2015-02-04

Canada is no longer minting pennies and taking them out of circulation.

author
Gadget93 (author)allangee2016-04-04

Oh, that's sad.

author
Vyger (author)yoyolo2015-02-05

Copper requires much higher temperatures to melt. It would be almost impossible to melt it with nothing more than a propane torch. So while you are correct in that it would be a better material for a ring it would also be a much harder process to make one. In fact you would be better off to use a section of a copper pipe and just hammer it to size and shape and forget about trying to melt it or use coins for the metaal.

author
fish_dude (author)2013-09-29

could i use pure copper pennies and make a copper ring

author
shizumadrive (author)fish_dude2014-01-01

This is what i'd do. Use pre 1982 pennies

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