Introduction: Mini Ninja Crossbow

Picture of Mini Ninja Crossbow

I had made a ninja kit and wanted something that could shoot. I looked for awhile on instructables but couldn't find something that matched what I wanted. I decided to just make it myself and it turned out great so I wanted to share my idea. This is a simple, surprisingly powerful crossbow that is only 12 cm. long.

Step 1: Materials

Picture of Materials

bamboo skewers,
fireplace matches,
small rubber band,
hot glue,

anything you find necessary to put this together, I used:
hot glue gun (obviously),
wire cutters,
needle nosed pliers,

Step 2: Body

Picture of Body

to build the body first cut 2 8cm. segments of the matches ( without tip)
then cut an 8cm. segment of a bamboo skewer (not pointy)
glue the pieces together into a v shape like in the picture

Step 3: Bow

Picture of Bow

cut a 6 1/2 cm. segment of skewer
stretch rubber band from end to end
hot glue ends

Step 4: Firing Mechanism and Front

Picture of Firing Mechanism and Front

use pliers and wire cutters to bend wire into pieces like in the pictures

Step 5: Handle

Picture of Handle

the handle is a 3 1/2 cm. section of match-that simple

Step 6: Put It Together

Picture of Put It Together

glue bow to body 1 1/2 cm. away from tip with one part of the rubber band over body (see picture 1)
glue tip to underside of body on end with the bow (see picture 2)
add one mechanism holder on underside of body on the right (see picture 3)
add the handle on an angle next to the holder (see picture 4)
slide mechinism into holder and glue on other holder oposite the first (see picture 5 and 6)

Step 7: Darts

Picture of Darts

cut 7 cm. sections of skewers with tips (measurements include tips)
add two pieces of tape opposite each other and trim for fins

Step 8: Fire

this crossbow can hurt although I have shot at people
I am not responsible for any harm done with this weapon
this works great with toxicity's altoid ninja kit
(it doesn't actually fit)


Green X (author)2014-04-17


RSV26 (author)2012-07-16

how big is it?

muffin_sauce (author)2012-05-21

thanks i is very cool but when I fire my bolts dont fire or they fail completely. i have only shot about 3 bolts out of 53450000000 tries can you pleas explain how i may fix this???? thanks :)

crazyJ113 (author)2011-10-08

I dont get the V shape please help

apls (author)2011-06-10

amazing and it works well so cuul

Purple Guy (author)2010-05-02

I can't understand this step? what do you do? Please help :)
*Purple Guy*

blubbersmith (author)Purple Guy2010-05-02

 wat step?

Purple Guy (author)blubbersmith2010-05-04

soz, it dosen't matter i figured it out :D
thanx anyway though!
*Purple Guy*

MMoyce (author)Purple Guy2011-05-20

how did u worked out how to put da firing mechanism on the mini ninja crossbow

lowe (author)2010-10-15

i dont understand the firing mechism

blubbersmith (author)lowe2010-10-28

its a bit confusing. the latch is held in place by two loops. one on eich side. the back is a button that lifts the front. the front is just a hook that holds onto the rubber band

lowe (author)2010-10-15

do you have to hold the trigger down to keep it from firing

blubbersmith (author)lowe2010-10-28

if it is built correctly then no, but in some cases yes. i built a custom spring mechanism for mine so it even resets by itsself but it was too complicated to post. in your case i would advise bending the wire a bit more

xmtr (author)2010-09-05

IT looks pretty deadly

sisar (author)2010-07-05

Set your camera into MACRO mode so as to get all the details

superhornt (author)2010-06-19

i am about to combine your idea with a pengun and ducttape ninja's hidden crossbow. objective: minitaurized pengun that can be hidden in your sleeve for stealth attacks, pissing ppl off, or just leaving the house "armed". i will use the firing mechanism shown here, the base from the hidden crossbow, and modify a pengun i found somewhere else. if im lucky, i will have something like Altair's (assasins creed) hidden blade, except its a gun, and i have to push on my forearm to fire. btw, i made a ninja crossbow XL by using full wood chopsticks. Currently, accuracy is almost nonexistent because imake fail arrows/bolts. it will fire PENCILS! however, pencils fly less than three feet before tumbling. i can probably mod it for more power/accuracy somehow, maybe by getting a better rubber band or adding feathers and weights to my arrows. what do u think?

blubbersmith (author)superhornt2010-06-20

ive tried building ducttape ninjas crossbow, and it works pretty well. i dont think tht it would need to be combined with anything. with his crossbow u can also shoot without using your other hand. with modded ammo it would be pretty acurate. feathers would get in the way though using his designs. the weights, if added correctly, i think would work well

superhornt (author)blubbersmith2010-06-20

the crossbow part won't fit into my sleeve, so i plan to use the pengun instead, which is very similar. also, i don't have chothespins or ducttape, which is why i want to use this firing mechanism instead. if i used a bit of string, i could fire with the flick of my wrist, but i need to find a ring that fits.

blubbersmith (author)superhornt2010-06-20

i just tied it to my finger without the string. it seams like your idea should work

nutsandbolts_64 (author)2010-02-02

 Is there any way to make this less lethal? I was thinking about giving one to my friend as a b-day gift but then I realized he would shoot me with it anyways. How about I give him darts with no tip on them! I think I'm going to make my own version. Btw, how does the firing mechanism work? I really don't get it...

 the sharp tip is very important to the arrow's balance in flight. without it it wont fly long as it isnt fired at the head or at point blank range it doesnt hurt that does hurt a little though. btw, if u do give it to someone be sure to be ready to repair the elastic if it breaks. it lasts about 50-75 shots. it might last longer because i was using old elastics but the roughness of the wood wears it down.

pieman12 (author)blubbersmith2010-03-18

i tested qtips and they fly fine with fletchings

 and the firing works by pressing the metal thing on the back of the lifts up the thing holding the elastic

 Oh! I get it. Okay, thanks.

pieman12 (author)nutsandbolts_642010-03-17

qtips make them less lethal

NatureBoom21 (author)2010-03-01

can i use a paperclip for the wire? also, this is awesome and very creative 5*s and faved :)

 thx and im pretty sure that would work depending on how strong it is. ive never tried it

mmk thanks. im gonna make like 3 of these :D

Leo_5587 (author)2010-02-25


pieman12 (author)2010-02-18

i just used skewers for my larger one.

pie R []ed (author)2009-11-04

just made this covered it in duct tape modified the handel and made the trigger spring loaded

Colonel88 (author)pie R []ed2009-11-22

BACON!!! Lol check my bacon group, search for "bacon" in "Groups"

pieman12 (author)2009-09-03

i made one out of toothpicks and it was awesome. it fits in a alyoids tin

bowmaster (author)2009-08-18


blubbersmith (author)bowmaster2009-08-18

did you build it yet or do you just think it looks cool

bowmaster (author)blubbersmith2009-08-18

I think it looks cool and I'm going to make one soon.

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