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A super Simple K'Nex Catapult

$A super Simple K\$

I have been reading & building stuff off instructables for a while now. I thought it was time to contribute.

Here is my first instructable: a simple but effective catapult. it fires about 2 feet, but shoots it really high.

it uses marbles, but small sinkers work as well.

Ready to build: continue to step 1.

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26 comments

Oct 3, 2011. 5:00 PMdirtbikerider78 says:

nice job i made won myself base on the same design fires awsome!!!!!!!!!!!!!!!!!!!!!

Sep 23, 2009. 1:20 AMtrav1234 says:

how do you put he elastic band on????

Feb 22, 2011. 1:03 PMbosniaguy says:

And what gives you the impression the elastic band is male?

Sep 11, 2010. 12:59 AMAnidion says:

Well done! Good instructable :)

Jul 28, 2009. 8:39 AMglugnar says:

cool idea but i cnt get it to shoot far

Apr 27, 2009. 4:54 PMgsmit says:

its called the basket.

Apr 26, 2009. 6:00 PMdragonoid294 says:

i fixed it so it will launch 2 yards hehe its awsome

Jan 17, 2009. 7:25 PMquesoman says:

cool idea... mine wotks great

Dec 8, 2008. 8:50 AMOwenmon says:

whenever i used this, it always flipped over and broke =(

Sep 10, 2007. 12:18 PM

Whaleman says:

Cool, there aren't many catapults on this site. And don't worry, after a while a lot of pieces will be bent or broken, I have broken about 20 pieces. (first and second comment unclaimable.)

Sep 10, 2007. 6:11 PMMepain says:

I've broken about 100...

Dec 9, 2007. 3:38 PMVirtualgoose says:

YEAH, WELL I BROKE 1,000,000,000 PIECES!!!!!!!!!!!!!!!!!!!!!!!!!!!111111111111111!!!!!!!!!11111!eleven

Jul 18, 2008. 12:51 PMf22araptor says:

how did u brake that many peices

May 8, 2008. 9:09 AMcarrothead23 says:

well i broke a rod wi;e malin this catapult!!! LOL :) :> :P ;) i heart smileys!!!!!!!!!!

Jul 6, 2008. 7:05 AMVIPER1 says:

i have only broken 1 of my knex pieces... that was when the ammo of my gun crashed into a wall at short range...

Sep 10, 2007. 6:20 PM

Whaleman says:

crap. But I treat my knex with care. And my room is so hot (bout 10 degrees hotter than it is outside) that I doubt my knex pieces could break without melting lol

Sep 11, 2007. 12:26 PMbunduk says:

why is it so hot ive broken 'bout 10-20 too

Oct 18, 2007. 3:23 PMDa_Fudge (author) says:

If anyone has built this, please tell me. if you have any mods, i'll edit them in. Da_Fudge

Apr 6, 2008. 6:00 PMZenosythe says:

could i have your permission to make an intructable of it? i'll be sure to give you and geek27 credit

Apr 6, 2008. 6:05 PMZenosythe says:

oops, th comment above this is supposed to be below the other one. plz pm me to respond

Apr 6, 2008. 5:54 PMZenosythe says:

Wow, me and my friend have been working on a catapult with the same basic system of this one, though ours uses geek27's firing method of sticking a clip on the end of a pole with an orange connector. I think his (geek27) is a related Instructable

Apr 25, 2008. 6:56 PMZenosythe says:

It's done! please check it out under knex catapult.

Oct 20, 2007. 4:48 AMgilros says:

I haven't broken any, but I've bent a ton... You know what sucks? I found an ENTIRELY new design for an auto loading k'nex gun, and I can't post any Instructables!!!