Introduction: Paper Kunai Knife

Picture of Paper Kunai Knife

Finally a kunai made of paper (and a pencil)

Materials needed:

Paper (rectangle, not square)
Pencil (new and unsharpened)
Tape (duct tape recomended)

This is pretty simple and requires little origami knowledge.

Step 1: Step One

Picture of Step One

Take a regular piece of paper and fold it in half long ways(hot dog style as the little ones would call it) and unfold so you have a nice crease. Then fold the edges in so you get a piece that looks close to the image.

Step 2: Fold in Half

Picture of Fold in Half

Fold over the top towards you (hamburger style...) so it looks like the pictures.

Step 3: Step 3

Picture of Step 3

Remember those paper airplanes you used to (and maybe you still do) make? Do something like that here. Also it will help for later if you crease a line underneath the triangle part of the first picture.
A suggestion by a certain commenter says that you should crease everything as much as you can after this step. I'm sure it will work

Step 4: Step 4

Picture of Step 4

Now using the line you hopefully just creased, fold over a part of it so the folded part touches the crease line in step 3, the middle, and the edge of the left side. In the picture, it looks like it doesn't touch the side but it does. Its just folding up. Unfold and do the same with the other side.

Step 5: Kind of Complicated...

Picture of Kind of Complicated...

Now you should fold the bottom edges in like the first picture. Make sure they line up with the middle. After that, use the crease that you made in step 4 to determine where to refold the edges out They should line up with the crease like the picture (which is a wee bit dark. Sorry...)

Step 6: Get It to Look Like the Kunai

Picture of Get It to Look Like the Kunai

Unfold the last fold you just made so it looks like the first photo from step five except with a crease. Fold over the flaps on that crease so one flap goes on the other.

Step 7: It's Gonna Kill You!

Picture of It's Gonna Kill You!

Ok, now you finished it. Or so you thought. Now you have to do the same thing again. Sorry!

Step 8: Putting It All Together

Picture of Putting It All Together

Now this is pretty easy but hard to discribe. You have to turn one over and put one flap of one and put it in between the other one's flap. Make sure the flat side faces out and it remains flat!

Step 9: Have Some Fun... With Tape!

Picture of Have Some Fun... With Tape!

Duct tape them together so they'll stay. Be extremely careful about the flaps on the end (the shorter end)Don't tape them together!
Now you can put the pencil in the untaped end and wrap tape around the short end to tighten it and keep the pencil in.

Optional: wrap tape around the pencil (it matches)before you put it in the paper.

Step 10: You Are Finally Done!

Picture of You Are Finally Done!

Have fun throwing these things aorund. If someone would like to think of a way to attach some sort of loop on the end, go ahead and suggest away. Also please don't hit people with these. They will hurt!
Also I have videos of me being an idiot with my kunai!


GhostGamesDesu (author)2016-12-14

i made mine but its 3-D instead of being flat. I'm very proud.

knucklehead07 (author)2016-02-26

i like this kind of origami

dragon0305 (author)2010-12-16

This thing doesent look like a real kuani from Naruto

Annabeth42 (author)dragon03052016-01-10

Not everyone owns sharp metal and welding tools, plus, it's just for fun anyway

shadowshuriken123 (author)2011-12-08

wtf make better kunia


Baron TinoH (author)2015-12-21

nice made it with clear tape looks good

OscarH1 (author)2015-02-04

made it in school nobody cared LOL

dinocat4 (author)2012-09-10


dinocat4 (author)2012-09-10

im not dead

dude so cool i made mine with gold duct tape

msimon-horton (author)2011-09-10

Cool it was eally easy to make!

eggbert131 (author)2011-04-09

if you like assassins creed tell me

kweathersby (author)eggbert1312011-08-13

man dat game hella bottsy man idk but only FAP lke dat just sain and FAP means fagget as ppl

hidankill (author)eggbert1312011-07-29

ASSASSINS CREED IS EPIC!!!!!!!!!!!!!!!!!!!!!

hidankill (author)2011-07-29

madness...... This, Is, IMPOSIBLE!!!!!!!!!!!!!!!!!!!!!!!!!

wonderdog01 (author)2011-06-29

Put a key ring on the end for a loop

xx_spookster420_xx (author)2011-05-06

Lol, I made mine with orange duct tape! It still looks cool!

GamerFang (author)2011-02-08

o crap forget this ima be late for school XD

BloodRayne (author)GamerFang2011-03-10


mrbunny100 (author)2011-01-16

when i will make it i will kill you all

sakuro84 (author)2010-12-05

it didn't kill me im a jashin

roxydog559 (author)sakuro842010-12-15

dude not right its "im a JANSHINIST

Halo nerfer (author)2009-10-20

How do you make it so small I don't get it My's 4 times the size of yours.

IamSASORI (author)Halo nerfer2009-11-24

look at step 1/2. he folds the paper.

roxydog559 (author)IamSASORI2010-12-13

yay for sasori

Halo nerfer (author)Halo nerfer2009-10-20

Oh yeah make more please.........

sakuro84 (author)2010-12-05

This is cool i added a key ring from a key chain on to it does hurt because i threw it, but it came back and hit me.

sakuro84 (author)2010-12-05


zombiesurvival (author)2010-11-17

ataching a loop is actually rlly easy, take a strip of tape, make a paper loop, put the tap in the loop so it looks like a cross from the top, attach to handel, secure



Puzzywuz17 (author)2010-10-29

I smell like fish, if anybody wants my mobile number it is: +447905715548

defense (author)Puzzywuz172010-10-29

why did u guve a phone number that is probably not your

if it is for a prank it is all good i like pranks

bamcar1 (author)2010-09-03


bamcar1 (author)2010-09-03


bamcar1 (author)2010-09-03


bamcar1 (author)2010-09-03


ianhs1 (author)2010-07-28

come on is that the best you can do add more pics

T3h_Muffinator (author)2007-04-11

Note the "We have a 'be nice' comment policy"...

Muffins are just ugly cupcakes XD jk

lolz my sister has a shirt that says the same thing XD

aniahlator (author)2010-05-10

 I think it's about to kill meeeeeeeeeeeeeeeeeea;dauieygda6rkaP;/['>

orogamifan (author)2009-05-02

Is there any way to make em heavier so they're more realistic?

Slizer (author)orogamifan2010-04-22

i usually fill it with hot glue

Reptiliar (author)orogamifan2010-04-05

Yes there is the most common method is toput pennys in it and tape up the bottom so the dont fall out.

joey joe (author)2010-04-05
richbow (author)2010-03-31

you guys suck

FFVIIBOY (author)2010-03-28

Thanks to you ive been makin paper kunais for about a year and a while ago i made a paper kunai that looks like the 4th Hokages kunais. just make a paper kunai and 2 paper claws, then cut off the part of the claw your finger goes in like the pic below and tape it on to the side

Weaponsmith (author)2009-07-31

This is really awesome. I used two pencils for the handle, painted it, used duct tape and it was awesome!! Thanks man (or girl) if anyone reads this message me and give me any weapon tips/ comments/ instructables. I am a certified ninja.

FFVIIBOY (author)Weaponsmith2010-03-28

Well im not a certified ninja but i am a ninja

chomper96 (author)Weaponsmith2010-02-25

i am a ninja to and go to my instructable just click my name and comment too

About This Instructable




More by sonicthechao:Paper Kunai Knife
Add instructable to: