Picture of Metal ninja star
This Instructable will show you how to make a very simple ninja star with something everyone probably has in their house and you can also make chili with it!!!!(dont throw this at anyone it can really hurt someone,i got my to peirce 3 inchs of drywall.)this pic isnt the real nija star you will be building srry.

Step 1: Gather materials

Picture of Gather materials
To make the ninja star you will need:

-One large tomatoejuicecan(works the best)
-A can opener with the pointy thing as in the picture.
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tinker2344 years ago
hey idead could i add for fun a small static charger to the metal so in thery i would have a nija star knock down strike evry time
I wouldn't suggest hammering it out on the cement... it chips too easily. I would suggest some sort of strong metal sheet, or an anvil.
if u use a rubber mallet it wont chip the concert or whatever it rubber
bears04 years ago
i had an old cassette tape eraser that had metal that held in the magnets and i made a real one. now i can say i made my shaken out of a cassette tape eraser.

Their response: "You made THAT out of WHAT!!!!!!!"
behme4 years ago
Cool, this is much more reliable than some of the other sites i've visited.
goldninja5 years ago
looks just like my real one
goldninja5 years ago
that is one awsome shuriken
sgps5 years ago
stop calling them "ninja stars"
i know because i have my own
this is a proper shruiken
man, I was wondering if anyone else had thought of this.
seriously? epic fail all these people making "ninja stars" but yet they don't even know the real name for it! I hate it when people call them ninja stars!! they are call ed shuriken oh and myserious ninja of fire-it isn't shaken but shuriken trust me my bro takes classes were he uses them and japanese swords and japanese bow and arrows and other asorted traditinal japanese weapons.
I'm sorry but your also wrong and right at the same time.

I teach Shuriken Jutsu .
firstly the word Shuriken is from very old Japanese and translates as "Sword in the Hand " .

the modern confusion over the terms arises in the translation from the Japanese Kanji the word for the round spike is Bo-Shuriken (stick shuriken), the term for the round flat disk shuriken was Hira- Shuriken or Kurumaken (wheel/disk shuriken) or simply Shaken. 
the terminology depended entirely on which Ryu  (school) the tool came from - each Ryu's blade style was usualy so distinctive that the Ryu could be identified by the blade shape.

but, the majority of the older Ryu taught the  terms for the multi pointed throwing knife is a shaken, a shuriken is a spike that is thrown.
a Shaken is a type of shueiken stupid
You're calling him stupid? If your going to put someone down for "being stupid" at least spell correctly.
Spelling mistakes don't increase stupidity, lack of knowlage (Specificially that you don't know said rule) Does.. Dumbass
I do sincerely hope, to a level you do not even understand, that your misspelling of "knowledge" was intentional...

Unless, of course, you were referring to the urban dictionary definition (which happens to be rather crude), of "knowlage", in which case I have NO CLUE'' as to how that could increase stupidity....
Your icon is correct.
Lol, Ty
I should actually try that. I never use that. So I am kind of used to fixing my own typos. If I have a typo it was probably done just to use slang.
real shuriken are actually illegal at least in SA & wherever the mythbusters live
neotom6665 years ago
I LOVE MINJAS!!!!!!!!!!!!!(midget ninjas)

by the way... you have the internet.  Before you call someone stupid for using terms that are correct (the hole shaken discussion), USE THE FREEKIN INTERNET for research.

Makes you look like a redneck that just found a aol 3.0 disk.....
An Villain6 years ago
i did this a long time before this was posted, i did it because we couldn't find our real can opener.
thefoodman6 years ago
i have the excact same star as the one on the first picture
I complement you on the quality of the instructable but on the purpose not so well i made this sitting here at my desk i threw it at a pile of hay and it bounced of and was bent i suggest experiemnting and finding a newer cheaper bigger cooler way of making a shaken (the term for a ninja star) maybe make one out of pencils that one i would read
it's shuriken!! not shaken grrr
Shaken is a type of Shuriken.
yeah you guys are right your pretty smart at this
scott86926 years ago
sheet metal sounds more realistic cuz who has an anvil lying around
The Jamalam7 years ago
added you to all out ninjas group :D
hellpilot7 years ago
Um yeah...i kinda threw it out my window and um, kill my um neighbors cat.
No not really. But it did go through my window!
Were you trying to stick it to the side of your house or were you throwing it outside?
is that a dog sitting in the top of the picture?
i think he should make an instructable on how to make that mini dog you can tell its not in the distance,so it has o be mini

minisize* me!

mini size instead of supersize

lemonie8 years ago
What is it with the Ninja stars and Shuriken? Please at least remove the metal from the chicken-can before publishing. A battery can be recharged / replaced... L
tuna can
Nope, chicken. Chicken...BY THE SEA!
airsoft1017 years ago
OK just made one don't think this is anything close to a real ninja star the foregone thing just bent when I pulled it out.
camondascia7 years ago
does anyone have a dremel??? I am a blade smith I make custom knives and swords and have been in the business for over five years i now make my throwing weapons via forge but when I was younger my four brothers and me used to take apart old bicycles and cut up the sprockets and make shaken (ninja stars) there is an almost unlimited potential in those little things and we got a lot of really cool designs out of these and if you have a decent target (one with the grain facing you not vertical or horizontal) you can even leave the gear whole and just sharpen the teeth. but this only works on the smaller ones the bigger ones generally have too much mass and don't stick well for the size of teeth but the bigger ones make better shaken anyway and they are already tempered so you don't have to worry about them bending due to a miss throw like you do with softer metals (tin and aluminum)
flio1917 years ago
I'm sure it might be a little light to work well, but if you worked on the throw... neat idea.
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