Knex Hidden Blade

Introduction: Knex Hidden Blade

This is an Assasins creed hidden blade that is triggered by moving your hand in an upwards motion. You can use it to pretend to be Ezio etc. 

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Step 1: You Will Need:

You will need:
Red / quarter - 7
Half moon - 9
Grey / two slot - 3
Tan clip - 1
Orange - 1
y clip - 1

white - 11
grey - 1
blue - 1
green 1


Step 2: Build

Look at the picture. It is simple enough to build from this pic.

Step 3: Put It Together

1.Put the trigger on the end of the body
2.put the y clip on the end
3.Put the grey rod in the body

Step 4: Other Stuff

1. Put tape on the hammer
2. Put an elastic band on it
3.Push down the hammer until the trigger stops it from coming out
4.Put on elastic bands to wear it
5.Thread string through the two grey connectors
6.Put end of string on your finger. You may need to adjust it to make sure that it is very tight
7.Pull on string with finger to use

Step 5: You're Done!

You are done!!! challenge

Participated in the challenge

MakerBot Challenge

Participated in the
MakerBot Challenge

1 Person Made This Project!


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    Trash to Treasure Contest
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    Rope & String Speed Challenge
  • Wearables Contest

    Wearables Contest

18 Discussions


6 years ago on Introduction

cool trigger!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


7 years ago on Introduction

this is great, but i modded the blue "trigger" to a white. The blue stands out to long under a sleeve.


8 years ago on Introduction

Although it is nicely constructed, I do not advice anyone to use this; that includes you. You seem to have used bands to keep this knife in place, and those bands seem to wrap around your arm. Not kidding here, that's dangerous. That poses a serious health risk. Your blood stream may be cut off by the rubber bands around your arm. I suggest you immediatly stop using this hidden blade until you have found another way to attach it.

the master 2
the master 2

Reply 8 years ago on Introduction

I have also just realised this risk for people using tight elastic bands. I suggest that you make a knex frame or tape on a toilet roll to attach the hidden blade.


8 years ago on Introduction

"Well done!!!!!" is inside :-P

It's not that bad, but you could work on it a bit :-)


Reply 8 years ago on Introduction

I'm not sure, but the only thing that I say is really on the not so good side is that the arm wraps are rubber bands, but that's just me.