Introduction: Knex Crossbow.

Picture of Knex Crossbow.

Knex crossbow.

Trigger in instructions suck, make the new one in pic 3.

Step 1: Step 1

Picture of Step 1


Step 2: Step 2

Picture of Step 2


Step 3: Step 3

Picture of Step 3


Step 4: Step 4

Picture of Step 4


Step 5: Step 5

Picture of Step 5



knexinventor72 (author)2017-11-21


knexinventor72 (author)2017-11-21

Cool, make sure to check out my crossbow as well

morrisme (author)2014-03-09

wholly guacamole!!

builderguy101 (author)2013-05-22

Nice I plan to build this soon

elwoodknight (author)2012-08-27

love this crossbow one of the best iv seen on this site (if you have any time plz check out my gun and see if you can come up with a name for me plz its got a 25-30 round mag attachable grenade launcher sight anf front grip for beter handling here is a link to my gun

daredevil499 (author)2012-06-11

n ice crossbow. will try to build it.
also in step 5 do you need the sharpened rod?

hazzybarton123 (author)2012-04-19

with just 1 band and a sharpened black rod I got through 4 pieces of cardbord

LiftAndLove (author)2011-12-29

dude...where does everyone get these knex!?! is there a cheap or relatively cheap way to get alot of these?

arjun1 (author)LiftAndLove2012-03-10

go on ebay, i got tons of knex from there

ferrari484 (author)2009-06-11

he why don't you use killerk's idea

pls (author)ferrari4842009-06-11

You mean a sling shot?

ferrari484 (author)pls2009-06-12

no i mean the a ammo just the Removable fins for your ammo for better accuracy well it mite work i hope

pls (author)ferrari4842009-06-12

Wouldn't work because the ammo cant fit inside the rail.

Killer~SafeCracker (author)pls2009-06-12

What did you do, spray paint the red rod??

pls (author)Killer~SafeCracker2009-06-13

Ya, a longgggggg time ago.

Blackbird17 (author)pls2009-07-27

it looks like it impaled someone...

Annix15 (author)Blackbird172011-12-07

now that you mentioned it, it does...o.o

Blackbird17 (author)Annix152012-01-22


Killer~SafeCracker (author)pls2009-06-14

Wouldn’t that cause more friction??

yes but barely, unless he used spraypaint designed for plastics...

not if you use very good spray paints

pls (author)Killer~SafeCracker2009-06-14

Yeah, I just used it because it was spay painted so I didn't care about sharpening it, so then I used it for my ammo.

no its a tan rod wich is a reinforced red rod

H1T4TCH1 (author)sprout_less2010-08-23

you mean a tan CLIP with a reinforced red rod?

pls (author)sprout_less2009-06-13

Hes talking about the picture of the ammo.

sprout_less (author)pls2009-06-15


ferrari484 (author)ferrari4842009-06-11

it will get more accurate

JJ8090 (author)2011-12-26

The word knex doesnt really tell us what stage it is..........

JJ8090 (author)2011-12-26

one word.........EPIC!!!
could u do me a favour?? can u think of stuff for me to add to my crossbow??

deadaccount (author)2011-12-22

This makes me want to make it just for the looks. I would make it to shoot, but all my rubber bands are tiny.

Annix15 (author)2011-12-07

awesome crossbow, i love it, looks so awesome

aleceatsfood (author)2010-01-23

on step three pic 11, its really confunsing!?!?!?!?!

Annix15 (author)aleceatsfood2011-12-07

you have to add another grey rod

Zappa021 (author)aleceatsfood2011-04-29

whats so confusing about it?

aleceatsfood (author)Zappa0212011-04-29

idk anymore I posted that a year ago I've built this 2 time nows so nothing

assassinman (author)aleceatsfood2010-12-04


assassinman (author)aleceatsfood2010-12-04


Xzen21 (author)2011-02-21

I'm about halfway through building it right now, having trouble deciphering the improved trigger. As a side note, building with k'nex destroys my hands...

Cristiano Ronaldo (author)Xzen212011-04-13


lol, lul is a dutch word for penis

And now I know



TheAwesomestDude (author)2011-09-21

man this is nice dude

LiquidMalisha (author)2011-07-22

Great gun. Looks good and looks like it would work well too. ignore the bad coments by dem haterz.

bosniaguy (author)2011-02-25


aleceatsfood (author)2011-02-21


knexjay (author)2009-01-03

i mean grey

Abcwtfidontcare (author)knexjay2011-02-11


masterchief1257 (author)2011-02-09

give the guy a break its preaty good I think I could not do any beter

About This Instructable




More by pls:Knex.Knex gatling gun.Knex rubber band gun turret.
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