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Picture of How to make a 6 cent Pocket Knife
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Here's what you need:
-Nickle
-Pennie
-Hammer
-Vice
-Hack Saw
-Grinder/Polisher
-(Optional) Cold Metal Blueing Agent

Now lets get started


IT'S LEGAL! U.S. Title 18, Chapter 17, Section 331: Prohibits among other things, fraudulent alteration and mutilation of coins. This statue does not, however, prohibit the mutilation of coins if done without fraudulent intent if the mutilated coins are not used fraudulently.
 
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Step 1: Hammering and Cutting the Nickle

Picture of Hammering and Cutting the Nickle
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In step we will hammer and cut the nickle.

As you will see in the first picture, I simply just hammered one side of the nickle. This gives you a longer blade.

Then we start cutting. Get your pen and draw out your pattern, it should look something like the second picture below. Now take out your hack saw and start cutting, a few drops of oil can make the cutting process much easier. Be careful not to make the little bar hanging off of the nickle too thin, its what we are going to wrap the penny around, and we want it as strong as possible.

Once you get your nickle cut out, click on the next step to learn how to put the penny on it.

Step 2: The Penny

Picture of The Penny
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We are going to use the penny as a handle for the knife. I recommended using a post 1982 Penny if you have access to the Blueing Agent that I had recommended. This is because all pennies after 1982 are Copper and Zinc, and we can blue the zinc, which looks very cool on this knife.

Once you have your Penny put it in your in vice and start closing it until it starts to bend like in picture 1.
Then get your Nickle, and put the handle that we were talking about in the bend of your penny like in picture 2, and keep and closing it and SQUEEZE as hard as you can until the penny is completely wrapped around you penny, like in picture 3. You can get a hammer and hit were to 2 sides of the penny meet, to make sure it wont fall off.

Right now your knife looks like a dented up mess, but in the next step we will clean it all up and make it beautiful and sharp!

Step 3: Grinding, Polishing, and Sharpening.

Picture of Grinding, Polishing, and Sharpening.
In this step we will grind, polish, and sharpen your knife. Get a very abrasive grinder and shape your knife to how you want it. You can get creative here, but keep in mind that it needs to be strong, so don't make it too skinny.

Then get a medium abrasive grinder and start grinding away the copper on your penny (that is if you are using a post 1982 penny, if you are using a pre 1982 penny, just grind it down until you cant see the face anymore), This is also a good time to clean up the blade and make it nice and smooth. Then get your polishing wheel and give you knife a mirror like finish.

Once you are done with all that its time to sharpen your knife. You can simply do this with a belt sander.

I apologies that I did not go into further detailing on how to grind, polish and sharpen you knife.
This is because there isn't much to say about it. It is very easy to do, So if you have any questions about it, just ask!

Step 4: Blueing and Finished Product!

Picture of Blueing and Finished Product!
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If you choose to use a post 1982 penny get your blueing agent and blue the handle.
I like to dip a Q-Tip into it and use it as a paintbrush.

And now, you have your finished product!
A cheap, cool looking, easy to make, pocket knife!

If you have any questions to be afraid to ask
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SweetGal1024 months ago
I don't know how it's illegal??? Cause it's not
IanR8 SweetGal10227 minutes ago

it actually is tampering us currency is illegal

awesome im going to use a quarter for this though.and im pretty sure destroying coins is not illegal but destroying paper money is and so ids defacing it like taking a $1 and puting a B before the ONE and a R after it so it says boner. but really no one is going to chase you for it even if it is a crime : / Canada needs to shut its mouth jk but seriously shhh :P
Destroing coins is illegal

Even when the Instructable cites the reg saying it's legal, we STILL get some posting saying it's illegal!

it is perfectly legal to melt down the old all copper pennies, why not bend them?
I'm pretty sure it's only illegal if you cut the money into little pieces then try to spend it, or cover it in paint then try to spend it.
BERTBOY13 temp6 years ago
it may be illegal but I've never seen anyone police running round trying to arrest somebody for cutting a coin up. therefore i would say lets do it anyways!
temp BERTBOY136 years ago
=D
what do you have against Canada???lol
i'm so doing that
rawstock6 years ago
OH GREAT! Now we won't be able to bring change onto an airplane. What will the NTSA do with all that change they collect at the entrance to security? Maybe they could set up a jet fuel fund for the public before coach flights from SF to LA get to $1000!
X4i5 rawstock1 year ago

ummmm... you wouldnt be taking the machines on to the accessible part of the plane at least.

ben_tooth1 year ago
Does that work and cut
I don't understand how you connected the two coins.
its not even a knife its a sharp sort of round thing
If you think about it, that's what a knife is, more or less.
actually that looks about the right size for a mouse slasher movie.. or mabye to skin a hamster with.
YYAAYYYY A NEW PRISON SHANK!! =P
Remind Me To Never Ever Go To Prison With You. Or We Could Shank Random People.
rhm34 years ago
Your name is prolly going to be on a list at a Fusion Center. If you don't know what a Fusion Center is just ask Jesse Ventura.
(YOUR N4 years ago
KOOL
plz tel me how did u sarpen the knife
mykmykmykkk6 years ago
cool, but is it sharp?
That depends on how well you sharpen it.
Actually, it depends on the hardness of the blade. In this case, since the blade is composed of copper and nickel, I doubt that it will hold an edge.
seabee8905 years ago
You, have caused my mind to start winding up.... the change jar will be ruined..  hehe, i was just thinking how about a "silver"dollar coin for the blade and a mexican 100peso coin for the handle, that would give you a bigger knife. I am also trying to remember if you can you some flux and silver solder to fold your nickel in half and draw it out to make a longer blade. cool instructable though. enjoyable
handidad6 years ago
About the penny pressing machines: this summer while in Quebec City I stopped by one machine that said to not use Canadian pennies. The notice said that there were American pennies available at the desk. There are some machines that how supply brass blanks automatically.
I saw the same thing while we were visiting Canada. The reason for this, I believe, is that American coins are made of a different material than Canadian coins. If you ever hold a Canadian coin and an American coin, you will notice that the Canadian coin is much lighter (quarters are the easiest to tell the difference). On our way back to the USA, we saw one of those machines that supply the brass automatically, only the "blanks" were a bunch of US pennies.
canadian coins are iron with copper finish. they will respond to magnets. this is another sign of proof that the gov't is wasting all of out $ on purpose. did you know that a penny is worth 18cents when melted down? ouch
Not anymore, pennies after about 1970 have a copper finish.
yeah, i meant that...
no i meant really the amount of copper in the shape and size of a penny would be.
Your comment is only partly true. I dug out a handful of change, all Canadaian.. Althoug they are mgnetic, I doubt if the copper is simply a finish, more likely an alloy of some sort. 4 pennies: 2007, 2005, 1977, all non-magneric. Only the 2008 was magnetic. The nickels, dimes quarters, loonies, and the outside part of the toonie were all magnetic. Probably 50 year old coins would have a different composition.
yeah, I found pretty much the same thing, but my 2005's were also magnetic
It is quite possible that a brass blank would cost more than a penny. I have used Canadian pennies in these machines.
Actually the problem is with the newer Canadian pennies. The older copper pennies are fine, but all the newer ones are just copper plated. I think they changed them in 2000 to this 94% steel, 1.5% nickel core and 4.5% copper plated zinc, with the copper plated zinc being what you see. There seems to be some that are cored with an odd white metal that is not magnetic and the melt really easily. You can actually nick them and dissolve the core of them out in an acid. You end up with a copper foil penny. Needless to say, new Canadian pennies are no good in one of those roller machines
I just answered a couple of posts previous. A 2007 penny was non m-magnetic, but the 2008 was magnetic. Do you know how thick the copper platig is? It sure would look strange to have a hollow penny..
I just checked and I found the 2008 penny was magnetic. When I cut it open it was the same steel core as a 2007 penny. The copper layer is not very thick, but I don't have a measurement for it. The USA pennies use the zinc core and if they are nicked on the edge you can throw them into a medium to weak strength hydrochloric acid bath to dissolve the zinc out of them. They will float to the top of the acid when done. Be careful with the hydrochloric acid. It will eat most metals and will burn skin. Use a baking soda bath to neutralize the acid after and the follow that with a water bath and dry the penny off. You should end up with a copper foil penny that weighs about 0.15g instead of the normal 2.5g. So far I have only tried it out on USA pennies. I suppose an acid that eats iron instead of copper would work on a Canadian penny. I guess I will try it with the Hydrochloric acid. Hydrochloric acid can be bought easily as Muriatic acid. It is sold in building supply stores for cleaning concrete cement and grout from tiles. If you try this be sure to wear gloves and keep safety in mind. Please read the MSDS on Hydrochloric acid before thinking about doing this stunt, it is nasty stuff if you are not careful with it. I don't even like having it around the house.
scafool scafool6 years ago
Sorry, I should have added that all the Canadian pennies I have from 2001 on are magnetic.
scafool scafool6 years ago
OH, OK. Let me correct myself. I just checked a handful of pennies with my magnet. I found and destroyed a zinc core 2003 Canadian penny. It was not magnetic, yet in the same handful were two other 2003 pennies and they are strongly magnetic. When I held it with a set of forceps in the flame of a propane torch it promply melted into a blob of zinc (I assume) with a bit of burnt copper foil. So the Canadian zinc cored pennies do exist, but I am not sure which mint produced them. They would certainly be candidates for the acid bath. The copper layer is very thin on them.
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