Introduction: Knex Hidden Blade

I was playing Assassin's Creed the other day and I really wanted one of those awesome Hidden Blades, so I made one out of K'nex. It uses a low amount of pieces, it's easy to conceal and the blade locks in place when it's out, so it can be really dangerous.

Step 1: Required Pieces

Rods :
2x Grey Rods
3x Bendy Grey Rods (Purple)
1x Green Rod

Connectors :
1x Light Grey Connector
1x Orange Connector
9x Red Connectors
5x Tan Connectors

Other :
A Rubber Band
29x Blue Spacers
You can replace 3 Blue Spacers with 1 Grey Spacer, but you need to have at least 5 Blue Spacers.

Step 2: The Base

This is the base of the Hidden Blade. It's very simple.

Step 3: The "Blade".

These are the two types of blades, but if you use a sharpened blade then it easily gets caught in the trigger and jams. You only need to build one.

Step 4: Putting It All Together.

The final instructions to getting it all together.

1: Put the Blade into the Base.
2: Attach the Rubber Band.
3:
4: The "straps". If you don't have wrists as skinny as mine, well, I can't think of anything. You can find a way to make them wider. =P

Comments

author
metalsonic (author)2013-03-23

cool !

author
lambolover9715 (author)2013-02-18

Doen't bloody work

author
The Cannoneer (author)2013-01-29

My wrist doesnt fit the flexi-rod holes.
Any ideas on how to make them bigger?

author
lxDlolomomo64 (author)2012-07-16

your creation is very creative :D
can you look at some of my creations :D

author
jaffawarrior1 (author)2012-02-16

awesome i aint made it yet but it lookz siiiiiik

author
aiverson1 (author)2011-07-15

i have no right to say this because this is my first post and i have no ibles cause i got no camera
but sir u fail 3/5 tho for concept

author
lou33mig41 (author)2009-04-04

ive jst modded it. now it does :P

author
jrobison2 (author)lou33mig412011-06-27

how did you do it i cant get a lock or launch

author
DaNG 95 x (author)2011-06-20

Havent even made it yt but looks siiiik! :D

author
lilnorm123 (author)2011-06-14

best ever

author
fingerless (author)2011-05-09

this is awsome i just made it and cant stop using it!!!

author
brettw88 (author)2010-11-21

hey thanks ive been looking 4 an easy guide to makeing one of these...YOU ROCK DUDE!!!

author
thatgreasymechanicguy (author)2010-10-03

sweet mine can't lock(my own)(not this one) so how does this one lock? im gona try 2 figger it out..................

author
SDW071 (author)2010-07-12

Hey Im new here but I was looking for hidden blades I built it and rebuilt the Piece that holds the blade to your Arm using two arm bands and a couple more rods and connecters the arm bands hold tightly to my arm and works great!!!!!!!!!!!!!! I'll post pictures later.

author
SpeedStrikerXLR (author)2010-07-11

its basicly a gun with no ammo and an oversized ram.. but any way cool idea

author
tysanio (author)2010-03-24

good to make

author
hockys1 (author)2010-02-26

 i modified this a little bit to use less pieces but on the bright side great blade

author
darlarshannon (author)2010-02-06

if the inventors of these toys submit them to lego and k'nex they could makr millions

author
jm121 (author)2008-08-10

this is my hidden blade

Photo 4.jpgPhoto 6.jpgPhoto 7.jpg
author
bighead5454 (author)jm1212009-12-31

make an instructable 4 tht plz plz plz plz

author
Izokay (author)jm1212008-08-11

this second you will make an instructable for that. that looks so sweet!!

author
jm121 (author)Izokay2008-08-11

if you want i will make an instructable for my blade

author
Dead Jakc34 (author)jm1212009-05-12

DO IT! That would be awesome!

author
Izokay (author)jm1212008-08-11

that would be awesome. thanks!

author
jm121 (author)Izokay2008-08-12

i have just started working on it.

author
bowmaster (author)jm1212009-03-17

POST IT!!!!!!!!!!!

author
ninjutsu (author)jm1212008-09-22

man that would be sweet! make an instructable for it!

author
d4rksaber (author)jm1212008-09-06

sweeeeeeeeeeeeeeeeeet

author
bighead5454 (author)2009-12-31

i made something similar cept u needed to pull a string to move a piece tht lets the blade pop out which was rreally cool the downside: it took up the whole arm literally check out my armour to see for yourself  it was basically a long rectangle tht u put on your arm if i can remake it to fit on an arm secretly i may post

author
nehitheterrorist (author)2009-10-11

mine wont lock

author
mo5 (author)2009-09-14

lame but cool

author
Warioman90 (author)2009-08-25

cool yeah i figure out the switch , but i didn't have any blue ring thingys so i looked and found some bigger grey ones but yeah it works pretty good and i used a wrist band tht a had laying around

author
mister lamp (author)2009-04-30

i got it to fit on larger arms

04-30-09_1918.jpg
author
mister lamp (author)mister lamp2009-04-30

its a little uncomfortable but it works.

author
lou33mig41 (author)2009-04-04

i made 1 of my own but it doesnt lok wat is the trigger for urs, mines a blok

author
13remco13 (author)2009-01-03

this is cool,can some ppl post their mod for this blade?id like to see some better versions(so the sharpend blade wont stuck or something)4.5stars good idea!

author
bighead5454 (author)2008-12-23

i read about the ideas of sharpening the rod but what if it like got caught on your hand there would be blood EVERYWHERE and it would hurt REALLY bad

author
Landon Sullivan (author)2008-12-04

NICE.''

author
j-chode! (author)2008-06-29

this is quit sneaky tbf. i like alot. one slick hand movement and you can slice your enemies throat.

author
apples!!!!! (author)j-chode!2008-06-30

sharpen the gray rod :D

author
Bartboy (author)apples!!!!!2008-11-27

Or widdle it down, so its flat like a real knife.

author
Onii (author)apples!!!!!2008-06-30

The sharpened end gets caught between the Green Rod and the Light Grey Connector when you pull the trigger, it's really annoying.

author
apples!!!!! (author)Onii2008-06-30

hmmm..i noticed that. ill try to fix that :)

author
knexdude152 (author)apples!!!!!2008-07-26

put tape on the connector

author
apples!!!!! (author)knexdude1522008-07-26

specify

author
knexdude152 (author)apples!!!!!2008-07-27

put some scotch or another tape around the grey connector i hav not tried this but it just came to my head like this blade sword sheath duct tape

author
apples!!!!! (author)knexdude1522008-07-27

uh...still would be funky. i was thinking to use a blue tab as the block, so its perfectly smooth whilst being rigid...just have to find a way to adapt it on

author

in a pencil sharpener

author

well, yeah thats easiest.

author
kung-fu- (author)2008-11-02

coolest ever made with knex you sir are my hero

About This Instructable

45,288views

15favorites

License:

More by Onii:Knex Hidden Blade
Add instructable to: