Picture of K'Nex Crossbow
A High-Powered K'Nex crossbow that can reach a pretty long distance depending on how many rubber bands you put on it. Its made entirely out of K'Nex and Rubber Bands
Remove these adsRemove these ads by Signing Up

Step 1: Make the rubber band holder.

Picture of Make the rubber band holder.
bow center detail.jpg
bow end detail.jpg
This part is critical, so follow the instructions carefully

Step 2: Make the body of the crossbow

Picture of Make the body of the crossbow
body side on.jpg
This piece is not so critical but is still needed

Step 3: Make the Trigger System

Picture of Make the Trigger System
trigger detail.jpg
This part is a little tricky but is very important - without it the crossbow is hard to load and shoot

Step 4: Make the handle

Picture of Make the handle
handle detail top.jpg
handle side on.jpg
This part is not really all that important, but it does make it easier to hold the crossbow

Step 5: Put the handle and Trigger System together

Picture of Put the handle and Trigger System together
Click the Handle and trigger system together using the two white rods and the two yellow connectors

Step 6: Attatch the handle/trigger to the body

Picture of attatch the handle/trigger to the body
body plus trigger detail.jpg
enter longer description for this step

Step 7: Attatch the body/trigger/handle to the bow

Picture of Attatch the body/trigger/handle to the bow
bow plus body underside.jpg
Put the the body/trigger/handle on the bow by connecting the yellow rods to the yellow connectors and the green rods to the yellow connectors.

Step 8: Add Rubber bands

Picture of Add Rubber bands
Add the rubber bands between the two red connectors (I added sello-tape to improve performance)

Step 9: Add counter rubber bands

Picture of Add counter rubber bands
Add the counter rubber bands on the white and blue rods to make the trigger work - These rubber bands must overpower the other rubber bands for the trigger to work

Step 10: Add a Trigger

Picture of Add a Trigger
Add an orange piece to the trigger system to make it easier to use

Step 11: Bow Complete!

Picture of Bow Complete!
The bow is now complete, But don't go Yet, you need to make the bolts that it fires see the next step to make a bolt

Step 12: Make a bolt

Picture of Make a bolt
Make this bolt (if you don't have the weird bit at the tip you can use a grey connector instead, or just don't have a tip)

Step 13: Fire The Crossbow

Picture of Fire The Crossbow
Pull back the Rubber bands and place them in the slot on the yellow connectors

Step 14: Put the bolt in

Picture of put the bolt in
bolt in detail.jpg
Put the bolt in the crossbow so that the orange connector on the bolt is sitting so the rubber bands are inside the end of it

Step 15: Pull the trigger!

Picture of Pull the trigger!
Pull back the orange connector piece made in step 10! - but Be careful where you shoot it
1-40 of 212Next »
SirDaftBunny made it!1 month ago
Pretty cool, although the handle bends a little.
mister knex8 months ago

Amazing ! I just got Working Riot Point Generator for totally FREE ! Come and download this RP Generator too

>> http://rp-generator.com <<

Really good crossbow.The accuracy is good, too.
great crossbow 5 star but you should try a different triger like this one http://www.instructables.com/id/bolt-action-rifle/
knexboy5863 years ago
cool 5*
NICK=)3 years ago
i made it and it works
NICK=)3 years ago
this is cool
I made major Modifications to this also :D
i like your moony blanket
Its tiny
thats the point
oh crud... I wanna build this F'in bad... problem is that I can't enlarge pics for some reason... WAH!!!!!
if your not a member you cant make the pic's bigger
There is a youtube video at http://www.youtube.com/watch?v=hYcwRZvD3WY . There it has clear instructions.
Marine5214 years ago
It is cool
Very Good I Modded it very rapidly and its is more bigger longer and bullet is changed to have a red conneter on the end to make it more realistic,
also i have mended it so more rubberband's can be added.
Panzer 954 years ago
Anyone made a good looking pistol that fires? Most look kinda rubbish
Panzer 954 years ago
Anyone made a good looking pistol that fires? Most look kinda rubbish
techman264 years ago
its good for its size but it isnt powerful unless you want to risk breaking parts
treejoe4 years ago
good crossbow. have a cookie
the only thing wrong with this crossbow is that if you use enough elastic bands and make it strong enough without to much that makes the grew long bits snap is that the actualy neck could brake so iv made a modded version hope u like it havent started a structional for it yet tho so heres a pic. sorry about the pic on its side
i have done a similar modification and found out that more than 3 rubber bands with bend and snap the gray rods so i modified on with a scope, iron sights, and ended up with longer bow and better handle
sammyhond14 years ago
I modded and post my modded verison . Ye there is a special thanks to you ^^
phillyrocks4 years ago
this works pretty good, are the bands suposed to get caught on those orange pieces?
dragonego (author)  phillyrocks4 years ago
The orange pieces on the Bolts, yes.
dragonego (author) 7 years ago
Coming soon:

post it!
spam on your own instructable =P
omg that thing is awsome 10/10
My sidearm looks like yours, but mine is much smaller, and of course simpler, but it has a VERY RELIABLE MAG that does NOT jam. Do you need pics? or not? (Oh yes extreme builder told me that it must fire larger ammo, so I am modding it now)
is there a parts list?
k so it's next year, which isn't soon. What's the holdup?
god freaking tap-dancing christ (lol) post it!!! it looks so cool :( (getting annoyed)
Ummmmmm you confuze me...
lol im getting angry cause its taking so long
Yeah well it's obviously not going to be posted.
I made it, it jams like heck.
dragonego (author)  I_am_Canadian6 years ago
Yea The new version has some improvments which stop it from jaming And guys, Ill post when I get some time between studying and Playing Gmod :D
Are you actually going to post it? You posted that picture like... 2 years ago.
That stinx
1-40 of 212Next »