Introduction: Knex Planetary Gun

Picture of Knex Planetary Gun

This is a gigantic knex gun used to blow up planets.

Step 1: Make the Bottom.

Picture of Make the Bottom.

Put the pieces together like in this picture. This is the bottom of it.

Step 2: Step 2

Picture of Step 2

Put three red pieces on: one in the middle and two on the sides. Put on four yellow sticks pointing to the middle.

Step 3: Step 3

Picture of Step 3

On the outside red sticks, put one orange, one small white, another orange and another white. Do that to the other side. Then add a green piece, a blue stick, and another green piece. Do the same thing on the other side.

Step 4: Step 4

Picture of Step 4

First: Put a white circle piece on the middle stick. Fit as many white sticks as you can on this piece.

Second: Attach the white sticks to red corners. Then attach yellow sticks to the red corners, pointing up.

Step 5: Last Step

Picture of Last Step

First: Attach green pieces to remaining blue sticks. Attach them to the end of the yellow sticks so they point to the middle.

Last: Get another white circle and attach two blue sticks like antennae to it. Place this on top of the red stick in the middle. Get another white circle and attach as many white sticks as you can to it. Lay it flat so it sticks on the green pieces around the outside and the two blue sticks under it in the middle.

You're Finished!!!


bannana inventor (author)2008-06-22

What is this?!? Does it shoot or just a model?!?

just a model but a cool-looking one

rootbeer96 (author)2009-03-25

hellchild you look like the dude who plays fred on the internet

DrWeird117 (author)2009-03-12

Pluto isn't a planet anymore, because I blew it up with this thing!

pikathebudgie1234 (author)2008-09-24

his brother i guess........but awesome gun

Bartboy (author)2008-09-01


ojochris (author)2008-09-01


Millawi Legend (author)2008-06-25

dude!!!!!!!! this thing is awesome!!!!!!! i blew up jupiter!!!!!!!!!!!!!!!!!!!!!!!!!!!! lol.

so thats were it went...

therandomperson (author)2008-07-27

My version is coming sooooooooooooooon! lol :D it will be out tomorrow possibly on slideshow PM me if you want instructions

Bartboy (author)2008-07-01

If you took out the inner missile, you coulkd fire it out of other guns!

I_am_Canadian (author)2008-05-14

Oh, i Get it. know remove that comment.

popomaster (author)I_am_Canadian2008-05-14

isn't it funny? btw i removed the comment.

I_am_Canadian (author)popomaster2008-05-14

Erm, I guess thats not my kind of humor. And thanks for deleting the comment. I Removed my "hilarious" comment too.

popomaster (author)I_am_Canadian2008-05-15

lol, i think its funny

combot55 (author)popomaster2008-05-18

off topic much? ~_~

ojochris (author)combot552008-05-20

yea, only a littli though... lol

Bartboy (author)ojochris2008-05-20

LOL keep the conversation going!

ojochris (author)Bartboy2008-05-21

Ummmmm...... Give 50 reasons why....

ojochris (author)ojochris2008-05-21

does that work?

Bartboy (author)ojochris2008-05-21


Bartboy (author)Bartboy2008-05-21

2 its funny

Bartboy (author)Bartboy2008-05-21

To see how far right it can go

ojochris (author)Bartboy2008-05-21


Bartboy (author)ojochris2008-05-21


combot55 (author)Bartboy2008-06-10

3. im bored

Bartboy (author)combot552008-06-10

4 We will take over the world!

ojochris (author)Bartboy2008-06-10


Bartboy (author)ojochris2008-06-10

when this comment list takes up the whole page!

ojochris (author)Bartboy2008-06-11



Bartboy (author)ojochris2008-06-11


combot55 (author)Bartboy2008-06-24

yeh, it kinda already has...

Bartboy (author)combot552008-06-24

The world is almost ours!

combot55 (author)Bartboy2008-07-01

it already is ours OURS

Bartboy (author)combot552008-07-01

Ha Ha, world conquest at last!

popomaster (author)2008-05-12

so awesome :D i built it and i threw it 1,000,000 miles :D it is so awesome. best grenade period. lol nice try though +1

I love making cheap jokes about little mishaps =]

lol :)

popomaster (author)2008-05-12

it looks kinda funny (if u know what i mean {:D)

stale56 (author)popomaster2008-05-19

thats what she sed

popomaster (author)stale562008-05-21


I_am_Canadian (author)popomaster2008-05-13

no, I do not know what you mean.

popomaster (author)I_am_Canadian2008-05-13

r u a guy? no offense but i typically see it funny in an older way lol.

I_am_Canadian (author)popomaster2008-05-13

Explain to me how its funny.

Hellchild (author)popomaster2008-05-13

that's disgusting!

Hellchild (author)2008-05-10


I_am_Canadian (author)2008-04-21

Does it even shoot?

Hellchild (author)I_am_Canadian2008-04-21


I_am_Canadian (author)Hellchild2008-04-21


Hellchild (author)I_am_Canadian2008-04-21

that's exactly what I said!

I_am_Canadian (author)Hellchild2008-04-22

well at least its not a block trigger :-p

About This Instructable




More by stephjboyd:Knex Planetary Gun
Add instructable to: