Introduction: Spring Powered Knex Gun

Picture of Spring Powered Knex Gun

Okey, this is a very simple gun, wich is made just for showing people how-to-use-a-spring-in-a-standard-block-trigger-gun.

shoots a fine 40 feet (with my spring)

If your just going to post something similar to stop posting this becuase its a block trigger, don't, i will come to you and haunt you (A).
This gun also can use some standard rubber bands, but i dont suggest it.


Step 1: Gather Your Parts!

get yourself:
1 spring, about 1 cm diameter and about 7 cm long.

1 rubber band, fo rthe auto cocking, as small as possible (even those tiny little half a centimetre ones will do!)

1 ball joint connector

2 blue rods
5 yellow rods
4 white rods
3 green/black rods
2 red/tan rods
2 grey/black rods

12 yellow connectors
4 white connectors
11 green connectors
2 red connectors
6 light gray connectors
24 dark gray connectors

Step 2: Make the Handle

Picture of Make the Handle

i know its crap, i just used it because its simple, sturdy, squizeable and connectable to this gun!
the pics should be easy enough, if not, you really need to ges some glasses (or put them on).

Step 3: Create the Ram Rod

Picture of Create the Ram Rod

the pic should be lear enoug, just two yellow rods with a white one in between, spring slided over one side of the ram, and finally two white rods for cocking.

Step 4: Make the Body

Picture of Make the Body

just follow the pictures, i think they are clear anough.

Step 5: Two Little Pieces

Picture of Two Little Pieces

this is just a blue rod with a grey (1 slot) connector clipped on it, and put it in the clone machine.

Step 6: Mounting in the Ram Rod

Picture of Mounting in the Ram Rod

this may sound very easy, but maybe can be a little harder than you might think, the pictures will clear it up :)

Step 7: Connect the Handle.

Picture of Connect the Handle.

just connect the two yellow rods to the two rd rods, on the back o fthe gun, dont forget to put the pieces od two steps before on it before adding the handle :).

Step 8: Rubbering, Loading, Aiming and Firing!

add one rubber band to the trigger, and then wrap it around the front handle.

to load, put you left thumb on the red connector on the back of the gun, then take the two white pieces on the ram with oint and middle finger, pull back untill you hear the lovely "click" stick a rod in the front and then hold the handles, put your left thumb on the trigger, put your face near the back of the gun, aim and shoot!


firezone (author)2009-09-20

you might want to add what kind of spring (extension or compression, extensions springs are kinda like a rubber-band and compression springs are the kind that you're using

altaria1993 (author)firezone2009-09-20

You can use both, if you use a compression spring you should just attach it on the other side of the ram and also attach it on the front somehow.

chuck norris (author)2008-06-23

I know that I tend to be a smart alec at times but this isn't so much an Instructable as it is, a picture book. Being that I've seen many guns posted on this site over the years, your particular design caught my interest because it was intelligently crafted on a spring-based weaponry layout. This stood out quite well in comparison to the weak, noobish, and unreliable sea of useless rubber band driven hand guns. However this Instructable became a disappointment upon seeing that it had no instructions, thus reducing it to a mere suffix that is -able. While some are capable of creation from illustration, others, including myself, simply wait until this -able's author to bring enlightenment concerning the methods used to create such a weapon of ingenuity.

KnexFreek (author)chuck norris2009-09-06

sweet name!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

altaria1993 (author)chuck norris2008-06-23

haha thank you :D now ill probably will probably make a more proper insturctable, thanks :D

chuck norris (author)altaria19932008-06-25

I will at least thank you for posting a positive reply.

liamjohnson (author)2009-08-02

double chesse

KnexFreek (author)liamjohnson2009-09-06

agreed my fine sir with salami perhaps my good chap?

barrax (author)2008-09-18

I got a spring gun that's as powerfulas the KK gun - making a magaazine for it. should i post it. P.S. If this goes 50ft. is about the same power.

privite (author)2007-07-17

too confusing

altaria1993 (author)privite2008-01-02

do you have a brain?

Galilxg3 (author)altaria19932008-04-30


Sypran (author)2008-02-28

it was a little to powerful but i once used an old broken airsoft guns spring (expect to used bracers/conforters on not just the fireing pin but where the pin hits the conectors.

napalm144 (author)2007-12-15

it looks a lol like a frog if u look just right

altaria1993 (author)napalm1442007-12-16

what did you do to your frog?

biggio (author)2007-07-21

You can get good springs at Lowes.

altaria1993 (author)biggio2007-07-24

sadly i have never saw one fo those on the netherlands

biggio (author)altaria19932007-12-09

that stinks

altaria1993 (author)biggio2007-12-10


peanutbordeux (author)2007-06-11

where would i find a spring big enough to fit around a knex rod??????

biggio (author)peanutbordeux2007-12-09


get a (old) pen, get a strong boot (army boots :D) and stamp the pen, take the spring, pull it out in with, and voila, though you can also just by them ar a hardware store :)

lilpepsikraker (author)2007-10-22

you can easily find a spring in a Jumbo size Popup Push pop thats were i got mine, my gun shot about 50 ft. just smash the crap out of a [EMPTY!!] popup push pop thing and the spring is about 3 1/2 inches long or 10 cm for you metric peeps

i wouldn't know what the hell is a jumbo size popup push pop, though, if it works, i'm fine :P and about the metric stuff, dont start saying centimetres are for geeks... they are more accutare then "about one eight of an inch"...

i never said ANYthing about metric is for geeks!! please i just hate when people flame over silly things like this! :) Fire is bad.. whatever

knex hater hater (author)2007-05-11

reminds me of the gewher 42 in ww2

yay coments!

ultimachris (author)2007-09-10


smidge147 (author)2007-07-28

i made something like this i used a bb gun spring and it was fairly powerful.

iwantacuracy (author)2007-07-28

that spring looks like the one out of my brothers potato gun. too bad i smashed the whole thing with a sledge hammer. LOL

mrbox (author)2007-07-14

lol, i'm new to this but nice design i tried making it with a 5cm spring that fits perfectly around the knex piece. The gun launched a good 40 to 45 feet! Great Job, keep up the good work!

Flie-Ing GOOse (author)2007-05-15


ive just built this and it really let me down, 3ft ..............................................................................................................

then i suggest you get a stronger spring, mine went up to 40 ft and i used an old metal spring wich is a lot weaker then when i bought it ( 5 for €2,50) so you should really try and get a stronger spring, i designed it just so that it cna have a lot of tension to both the front and the back of the ram rod, so thets not the problem...


altaria1993 (author)altaria19932007-05-17

the € part should bve a Euro sign, and btw, 2,5 Euro is about 3 US dollars

altaria1993 (author)2007-05-12

have you guys also tried making it?

yea i did and it went a good 33ft.

Easy Button (author)2007-05-12

i have a spring but its only like 3cms

altaria1993 (author)Easy Button2007-05-12

get pliers and pull it out a little :P

Easy Button (author)altaria19932007-05-12

kk ill try

About This Instructable




Bio: I like building computers, buying useless junk for allmost notghing from Ebay, Listening to music (Iron Maiden :D)
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