Introduction: Knex Marble Gun

Picture of Knex Marble Gun

A quick and easy knex marble gun to make, with a good amount of power have fun. sorry for any miss spellings

Step 1: Makeing All the Parts

Picture of Makeing All the Parts

first you will need to make all parts in this photo.

Step 2: Adding All the Parts Together

Picture of Adding All the Parts Together

pic 1 is the bit that holds the trigger pole

pic 2 and 3 are putting the trigger on

pic 4 is putting the trigger end on and the handle on

Step 3: Putting the Rubber Bands On

Picture of Putting the Rubber Bands On

just put them on like in the photos the marble sits on the front of the gun on the grey poles it shoots poles to just put them in the hole


XxsonicxX (author)2013-02-21

Poles is actually Rods.
Put your finger on this bit and fire is actually a trigger

Drive pole is actually a ram rod.

crestind (author)2006-12-17

How far does this shoot?
I have a feeling this will shatter my K'nex rods-
Fast-moving, plastic K'nex rod + dense, solid glass (?) marble = shattered rod?

Cool idea though. Could you post a video?

knexman (author)crestind2006-12-17

no can't post video no cammera and have not broke a rod yet after 500+ shoots and i live in australia and we measure in meaters not feet so i have no idear on how har it shoots and all my good rubber bands have gone missing and have not gone and got more yet

Bartboy (author)knexman2008-12-01

Generally, aussies can measure in both, and its not that hard.

An Villain (author)Bartboy2009-08-04


Bartboy (author)An Villain2009-08-05

Aussies= Australians.

1 metre = 3 feet

And it's spelled metre, not meter ( in Canada)

 3 feet=1 yard

1 meter is three inches longer than a yard

An Villain (author)Bartboy2009-08-05

i know about the metre, i also knew about the aussies, i just know people who think calling australians "aussies" is impolite.

Bartboy (author)An Villain2009-08-05

That's odd, two of my friends moved from Australia two years ago, and they call themselves aussies....

grevious (author)Bartboy2008-12-16

generally i can measure in both metres and feet.

grevious (author)knexman2008-12-16

go australia :D

Whaleman (author)knexman2006-12-22

well metric or non metric doesnt matter, google can transfer feet to meters or vice versa, it can even do hogs heads(actual unit of measure, weird, eh?) to cups!

An Villain (author)crestind2009-08-04

only if the glass is stuck in position, or the firing-pin has so many rubber-bands on it the whole gun would buckle, trust me this works.

Bartboy (author)crestind2008-10-07

not at all!

will-am-i (author)2009-06-13

a good gun dosent shoot far tho 3 1/2 stars. tip: use two rubber bands

knexman (author)2007-01-12

try ing to put trigger on new gun but not haveing any luck

darkfiredevil (author)knexman2007-01-22

Hi i'm new and my English is not so good so. My question is what is marble?

Danny (author)darkfiredevil2007-02-28

a marble is a hard stone that they form into a ball and it is shiny and very smooth

Bartboy (author)Danny2008-10-07

made of glass......

Bartboy (author)2008-10-07

looks like room for my marble gun hopper, then its auto load

pls (author)2008-04-16

i like the idea. and looks like room for a true trigger?

The Jamalam (author)pls2008-08-17

it is a true trigger if you look at it, put 2 oranges on the yellow rod and make a handle, and there is a true trigger

The Jamalam (author)2008-08-17

clever trigger

knexman (author)2008-08-16

yay just finished making my next instrutable it is a semi auto that holds about 40 blue poles now for the bad news it has a block trigger i have started work on the next version of the gun and i am 99% sure i can put the same trigger that is on this gun on it key words for it are knex gun. if you have any questions just ask

go123 (author)2007-09-08

gun coming soon 4000ft

Mr Tenacious (author)go1232007-10-17

u must be jokin, more like 40 ft, 4000 ft is like................................. Impossible

mrbox (author)Mr Tenacious2008-05-27

u must be jokin, more like 40 ft, 4000 ft is like................................. Impossible He didnt specify if it was a knex gun or a gun... if it is a knex gun then it probably shoots like a bb 400 ft but if its a real gun it would probably be a gun that uses an air compresser to launch a bb 4000ft

seszarahia (author)Mr Tenacious2008-03-05

no like 0.4 ft

Metal4God (author)Mr Tenacious2007-10-17

or 400 lol

Mr Tenacious (author)Metal4God2007-10-17

hahahaha he is a bigedy whoops. *is that a word* *HMMMM* but 400 ft would be awsome

Metal4God (author)Mr Tenacious2007-10-17

maybe he meant 400 inches!

Mr Tenacious (author)Metal4God2007-10-18

or 400 yards or miles lol

Metal4God (author)Mr Tenacious2007-10-18

400 light years!

20000 mm under the sea...

Mr Tenacious (author)Metal4God2007-10-18

(thinking methodically) wot is further than a light year.... hmmm HAHAHAHa got it , 4000 lightyears to the power of 400000000000*10.

Metal4God (author)Mr Tenacious2007-10-18


No, probably 4.0 ft. LOL

knexsuperbuilderfreak (author)2008-03-24


panzerunit5 (author)2008-03-06

i love this gum i just built it

Japaneese taco (author)2008-02-03

this kicks @$$ dude

Jill 32 (author)2007-10-27

Fun! You can fire other stuff besides marbles, too!

s0lekill3r (author)2007-09-30

this is an awesome gun. i really like the trigger system. i put a magazine on it tht holds 7 marbles and now i can rapid fire or single shot.

lib7 (author)2007-09-24

i have made a gun lyk dis in the proccess of posting it

beanie123 (author)2007-09-21

i made a smaler version

beanie123 (author)2007-09-20

this is a gr8 gun it shoots lots of things (stones,marbles,pennys,rods)

Knex Lego Maniac (author)2007-03-24


its already come out!

adamsdead (author)adamsdead2007-07-25

considering making an instructable for this any comments?

crazykilla (author)2007-07-07

who wants the insructions for this marble gun with a mag i made today

Knex Freaky Maniac (author)2007-06-14

Guns nice good work.

About This Instructable




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