Introduction: Knex Table Top Catapult

Picture of Knex Table Top Catapult

This is my first instructable i hope u like it. NOTICE this is not ment to be perfect its supposed to be a foundation for improvement. anyway leave me comments or anything u guys (or girls) think i should do better. I am also in the process of doing other knex instructables and a few airsoft ones if u have any suggestions just ask

Step 1: The Base

Picture of The Base

all you have to do is look at the pictures and do what u see on them. This base was built in 10 min so its not that great it might help to add more support and weight.

Step 2: The Arm (boom)

Picture of The Arm (boom)

Now make a long rectangle of the purple (gray) 3-D pieces about 3/4 of the way down instead of adding a diaginal white put 2 white pieces facing up(look at the pictures).

Step 3: The Basket

Picture of The Basket

this is the simplest basket i could make for the kinds of ammo i had.

Step 4: The Rubber Bands

Picture of The Rubber Bands

The rubber bands u shuld use should be thick,strong,and big. If you look at the pictures you have to loop the rubber band around the yellow rod. you should do this to the rod that has the rubberbands on it (last picture)

Step 5: Finishing Up

Picture of Finishing Up

1 this is what happens if it does not wiegh enough and it is fired
2 basic ball u culd put more than 1 in the basket at a time.
3 this is a small spike ball u can make the spikes longer with bigger rods
4 this is a gear ball its mainly the wieght that counts for this one
5&6 this is a knex grenade that i found earlier on this site it fits nicely in to the basket vertically
7&8 these are just other angles of the catapult.



mountain dew mountain dew mountain dew mountain dew mountain dew mountain dew mountain dew mountain dew yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa


Chandler08 (author)2014-08-20


nanosec12 (author)2010-01-28

The only step I even looked at, hehe

popcorn4lunch (author)nanosec122011-02-24

i know, me too :)

knexknex22 (author)2010-03-12

how many units long is the arm

Raiden97 (author)2009-08-05

CODE RED i voted for voltage

abalone4 (author)Raiden972009-09-13

lol i voted for revolution

coleslaw3 (author)2009-06-01

MEH MEH MEH MEH MEH MEH meh meh meh meh meh meh meh

coleslaw3 (author)2009-06-01

my favorite step lol

knektek (author)2009-05-14

If the power was adjustable, it would of been better

abalone4 (author)knektek2009-05-23

well i agree with u there but like i said this is mainly a skeleton for u to do whatever you want with if you knew how you could make a wheel to pull the arm back and that could make it adjustable

abalone4 (author)2009-02-15

i no the pictures go wayyyyyyyy of the page on the intro idk why

stale56 (author)abalone42009-02-15

y do u have a random pic of mountain dew?

Bam82693 (author)stale562009-02-15

MOUNTAIN DEW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1!!!!!!!!!!!!111!!!!1!!!!one!!!1!!1!1!one

stale56 (author)Bam826932009-03-09

rofl, that made my day

stale56 (author)Bam826932009-02-16

u should try launching mt. dew...

knexguy (author)stale562009-02-16

But then he wouldn't be able to drink it...

stale56 (author)knexguy2009-02-16

but then it would explode, go everywhere, so everbody can lick the walls and ground to get their mountain dew

knexguy (author)stale562009-02-16

Yes, but then he wouldn't get as much. And everybody knows Mountain Dew is not for sharing.

stale56 (author)knexguy2009-02-16

sharing is caring=) then i can get some mountain dew...

knexguy (author)stale562009-02-16

Hmm, but surely it would be easier to share if you passed the bottle around rather than having people lick it off the floor?

abalone4 (author)knexguy2009-02-16

but wheres the fun in that i mean if i want to do that i culd build a mountain dew squirt gun ;) ahhhhh but it was just a random picture i had and the bottle does not fit in the basket :(

knexguy (author)abalone42009-02-16


Bam82693 (author)knexguy2009-03-08

MOUNTAIN DEW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1111!11!1!!1!11!!!!!!!11!11!1!1!!!!!!!1!!1!one!1!1111one!!11!!

DJ Radio (author)2009-02-16

Nice catapult, 5*

abalone4 (author)DJ Radio2009-02-16


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