Mini Ninja Crossbow

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Introduction: 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

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

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

Step 2: 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

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

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

Step 5: Handle

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

Step 6: 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

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
USE EYE PROTECTION
I am not responsible for any harm done with this weapon
this works great with toxicity's altoid ninja kit https://www.instructables.com/id/Altoid-Ninja-Kit/
(it doesn't actually fit)

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    36 Discussions

    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 :)

    amazing and it works well so cuul

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

    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

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

    1 reply

    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

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

    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?

    3 replies

    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

    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.

     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...