Introduction: Knex Bow

Picture of Knex Bow

this a knex bow but it has a difference between most others, it's arms are rods not connectors.

Step 1: Parts

Picture of Parts

these are the parts you will need to make this bow.

1 grey rod
2 orange connectors
3 red rods
1 red connector
6 yellow connector
2 grey connectors
1 yellow rod
10 green connectors
12 green rods
10 white rods
1 doubled up rubber band

Step 2: Making the Skeleton

Picture of Making the Skeleton

this the skeleton of the bow.

Step 3: Making the Bow Arm Supports

Picture of Making the Bow Arm Supports

these are the supports. this is a critical part of the bow, they prevent the arm form snapping off.

Step 4: Finishing the Bow Arm Supports

Picture of Finishing the Bow Arm Supports

these are the finished bow arm supports.

Step 5: Attiching the Bow Arm Supports

Picture of Attiching the Bow Arm Supports

this is how the bow arm supports are attached

Step 6: Adding More Support

Picture of Adding More Support

this is also needed or the middle of the bow will bend

Step 7: Finishing the Mid-section Supports

Picture of Finishing the Mid-section Supports

this is the mid-section supports finished. do this on both sides.

Step 8: Making the Arrow Track

Picture of Making the Arrow Track

this is where the arrow will leave the bow, also, it stabilizes the arrow. what side you put this on depends if you are lefty or righty.

Step 9: Put the "bow String" On

Picture of Put the "bow String" On

have two rubber bands and double them up using a slipknot, then slipknot both ends to the two grey connectors,one on one end one on the other the attach them to the bow arms. congrats your bow is done now to make the arrows.

Step 10: Making the Arrows

Picture of Making the Arrows

to make the the arrow use the grey rod and the remaining red rod and connect them together using the orange connector and then connect the other one to the end of the red rod.

Step 11: How to Fire

Picture of How to Fire

to fire put the arrow(red rod against the rubber band)in the track.then pull back and fire.


sandmman (author)2012-05-05

Looks very flimsy and not very powerful, I would advise that you either reinforce it or make it much larger to give it more power.

asassin28 (author)2011-07-16

i have been searching the net all afternoon and i struck gold when i found this . awsome bow

14r31337 (author)2010-05-22

Kewl, rated 5.0.

prodo123 (author)2010-05-09

The bow looks really flimsy.

T3453R (author)2008-06-25

hi . havent been on here for a while but i came up with your bow and sorry to say but it isnt that nice never use rubber bands as string use a rope and use rubber bands on a mechanism in the front to shoot it it will shoot way further and that way you can make the frame stronger so you can pu on more rubber bands + you can make it reltime size if anyone wants it i can post it again sorry for the comment (nice effort btw)

Trogador (author)T3453R2008-08-08

I'm not sure exactly what you meant, but I think your rope-rubberband system refers to compound bows. Of course, don't put too much faith in me; I know nothing about toxophilite's jargon >_>

prodo123 (author)Trogador2010-05-09

He means one of those fancy pulley-operated bows made of metal. That way, the bow can shoot with more force with less strain.

Lukes mate1 (author)T3453R2008-09-14

post it please

cj81499 (author)2009-06-22

dose the piece need to be broken?

snipeyouout (author)cj814992009-06-22


tahirhh (author)2009-02-01

when I pulled the arrow back to fire it, it snapped and flew into my eye, it hurt like hell. do have any improvements to stop this from happening

talons95 (author)tahirhh2009-06-15

are you ok :0

snipeyouout (author)talons952009-06-15

Ya, why wouldn't I be?

snipeyouout (author)tahirhh2009-02-01

I'm sorry to hear that but if you read the comments you would notice I made a mod that is an orange connector with a gray rod on both sides. Hope that works better for you

rossinator7 (author)2009-04-20

you wrote a the start that most otherbows used connectors for arms this is because the are stronger and will not snap. it was a nice idea but is very impracticical.

ILIKEPIE333 (author)2008-09-11

I built this thing and the arrow kept flipping off to the side wtf!

DrWeird117 (author)2008-08-30

ULTI-FRIKKIN-MITT EXPLOSIVE ARROW: Get 5 orange 2-slot connectors, stick them together, WITHOUT RODS, then on the end, put a 3-slot red connector. Slide the orange connector through the bowstring on one slot, and pull back, release! I AM NOT RESPONSIBLE FOR WHAT YOU DO!

BobicusIX (author)2008-06-06

Im new here but ive known about this site for a while so just a little note. Anyway about the arrow, wouldnt it work better if you made it with just one grey stick? Because the connecors make little bump-type-things when you stick them on to a rod. I know that you would have to still have one connector, but two would make it bump up even higher wouldnt it? And a suggestion, you could put a red connector on the stick to make it look like it has an arrow head on it... Even if it only looks vaguely like that its still kinda nice.

Davis9101 (author)2008-05-29

Yeah I would Love too See How Long it goes Though...

knex-4-life (author)2008-05-29

Yay its good, without that many pieces too! But if you make the arrow with two grey and one red, I think, it works better.

zap89 (author)2008-05-17

i made 3 layers...ITS INDISSTRUCTABLE

juneapaluna (author)2008-03-30

That's a great idea, looks like it would fire very well.

mrmoneybagss (author)2008-03-05

pretty good, but it fires oddly. how am I suppose to fire it?

snipeyouout (author)mrmoneybagss2008-03-09

well I figured out a mod, if you get rid of the hook thing on the arrow that holds the arrow that holds it on the rubber band and instead of a red rod a grey rod so its an orange connector with 2 grey rods sticking out of each end it fires better

mrmoneybagss (author)snipeyouout2008-03-10

k thanks

bedbugg2 (author)2008-02-11

ive seen others which use rods instead of connectors...

snipeyouout (author)bedbugg22008-02-11

Big knex bows use connectors for more strength

arrow shot (author)2008-02-10

thye wont if they are at the right angle, but 2 degrees off and it will spin and snap, so i suggest modding the rubberband holder, with even a slightly more simple idea by snapping it on instead of cliping it on, although it might slide, it wont snap, ill try to make a mod of this later, when i get my photoshop to work

snipeyouout (author)arrow shot2008-02-10

of all the times I've shot it they didnt snap off, you could try snapping them on if that would work better for you.

I_am_Canadian (author)2008-02-09

dont the grey clips on the end of the arms fling off under pressure? Good job

They actually don't.

thebboy (author)2008-02-09

nice yep

GorillazMiko (author)2008-02-09

Great job/ Instructable. Looks really cool, one of the coolest K'nex bows I've seen yet. Great job once again!

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