Introduction: Knex Light Crossbow

A crossbow i made because i felt like a newb just copying down and making everyone elses gun

This is my 1st instructable, i could use some helpful comments.

Anyways, this crossbow fires about 40-50ft with good rubberband(s)

Really simple to use, trigger powered by counter rubberband.

I hope my pictures arent that blurry

<(-_-)> :D <(*_*)> :) -_- ";,:"

Step 1: Building the "track" or the Barrel of the Crossbow

Build the track of crossbow. The bolt will shoot along this track. i dont know what its called

1. make about eight of these, you can make more or less if you want but eight worked best for me

2. connect them into a row like this (sorry for weird picture)

3. Make this, its the same thing as the 1st step except dont use an orange connector

Step 2: Making the Trigger

Making the trigger, very important peice

Step 3: Connect It All Together

connecting the trigger, the track, and that one weird peice from step 1 together

1. attach trigger to track peice that does not have an orange connector

2. connect trigger to track

your done with the 1st half of the crossbow yay w00t :D

Step 4: Making the Top Half of the Bow Section

1. Make the cross section (4 blue spacers are used)

2. Making the bow section

3. connect them like so

Step 5: Bottom Half of Bow Section

This is the bottom half of the bow section. It is not really that important but highly recommened as support.

Note: 8 blue spacers used

Step 6: Connecting It All Together

1. connect the two halfs of bow section together
2. side view
3. back view

4. connect track to bow
5. blurry closer view

Step 7: Adding the Rubber Bands

1. adding counter rubberbands to trigger. I used larger and thicker rubberbands and connected them to the 4th track piece

2. adding rubber bands to the bow.

3. bottom view of rubber bands on bow


when you add the rubberbands on the bow, if they are not long enough to stretch all the way back to the trigger, try linking two rubberbands together. thats what i did

Step 8: Loading and Firing

ahh yes the fun part

pull back rubber bands and lock them onto here

you will be firing these bolts

load arrow like so

pull trigger and release

WARNING: be careful to not shoot your eye out with this thing kid

Comments

author
knexgunbuilder217 (author)2012-07-29

i modded your crossbow to use giant rubberbands instead of linking two of them

author
Neon__Knight (author)2012-07-09

This is AWESOME. A 10/10 on the scale! .... but i have some mods i want to add to it.... I will show them when they are done.

author
knexboy586 (author)2012-06-28

THIS IS AWSOME but when i saw it the pics were different so i think

author
dragonman01 (author)2011-06-25

need better first picture

author
bobikofbobik (author)2011-02-02

wow it is real serious:P it shoots quite hard :) i'm gonna make it bigger and stronger

author
blab1423 (author)2010-12-16

this... is... awesome! how long did it take you to make?

author
projectR (author)2010-11-12

nice design

author
finmonster (author)2010-04-09

cool a good first crossbow well done

author
mdmdmdmd (author)2010-01-09
Can i use yellow instead of orange connectors

 
author
J4mm3r5 (author)2008-12-09

Um, why are there only 2 pictures when there should be 3??

author
narutokid201 (author)J4mm3r52010-01-04

he pretty much combined the first and second step together

author
sembo (author)2009-12-19

It shoots fast and is easy to reload

GREAT BOW

author
psharpep (author)2009-11-01

Umm.... yeah helpful tips? It's called a tripod. Oh well, I guess good job for your first instructable. I've seen alot worse.

3.5/5

author
Ryan Assis (author)2009-03-27

your crossbow rocks i shot my wall with it and it blew a hole in it

author

I go with swords45 :>}. It awsome

author
swords45 (author)2009-03-10

when i was done building this, it took 5 minutes just to put the damn trigger in the right place. then i figure it out and it fired so fast that i forget where it went. perfect creation 5/5

author
swords45 (author)2009-03-09

that's a trigger? hmm look okay but easy to build

author
skim1 (author)2008-12-03

me and my friend made this, but didnt like the crossbow look, so made it look like a shotgun. also, on the "arrow", we took the front red connector off. great instructable. 5 star

author
Sasha25 (author)2008-09-01

nice

author
Stealthkiller121412 (author)2008-08-07

yay!, no hinges! :)

author
I_am_Canadian (author)2008-07-20

The video doesn't work

author
wussap (author)I_am_Canadian2008-07-27

i put the video in by accident forget it

author
I_am_Canadian (author)wussap2008-07-27

Ok.

author
strato96 (author)2008-07-01

Hey good bow!

author
strato96 (author)2008-06-30

great instructable!

author
matstermind (author)2008-05-13

good bow. 4 star

author
zap89 (author)2008-04-30

light??? wtf

author
I_am_Canadian (author)2008-04-16

Good job. +1

author
NajaMushrooms (author)2008-04-12

not bad for first Instructable. :D

author
knexdude (author)2008-03-15

I made it and it's pretty good

author
jabbathegut1 (author)2008-03-05

if this is 'Light' what is your havey crossbow like ???? , nice work

author
oldsmobilefreak (author)2008-01-05

check out my rifle its this in gun form

author
KneXguy123 (author)2007-11-15

sweet. looks powerful. how far does it shoot?

author
wussap (author)KneXguy1232007-11-15

about 45 ft

author
KneXguy123 (author)KneXguy1232007-11-15

is the trigger good? does it auto lock?

author
wussap (author)KneXguy1232007-11-15

not sure what you mean by autolock, its pretty good

author
killuhmike99 (author)2007-07-17

how the heck do you link em

author
ericm247 (author)2007-07-02

nice 1

author
bradleyJOHN (author)2007-06-15

XD its hurts when u get hit i started bleeding heaps bad

author
Easy Button (author)2007-06-14

well i didnt make so i dont know

author
Easy Button (author)2007-06-14

looks pretty nice

author
killerk2 (author)Easy Button2007-06-14

looks arent everything gamer........ hows the performance???

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