How to Make the Assassin's Creed Hidden Blade




Ever since I first played this game, I've wanted one of those sick hidden blades like Altair has. Well, in this Instructable, I'm going to show you all how to make one for next to nothing.

Here's a look at a very detailed drawing of the one from the game:

Originally, I got the plans from Wesley Scoggins on I modified it a little, but kept the same basic structure/ provided more detail. Here's the website if you want it:

Here's a video of it in action:

Let's get started!

Step 1: Supplies

This is an overall incredibly cheap build. I spent about $10 on it, and that's only because I'm at college and I don't have any spray paint/x-acto knifes.

3 Toilet Paper tubes-Free or $5 at Taco Bell
Pack of Paper Fasteners-$1.29
Foam Board-$3
2 Rubber Bands
X-Acto Knife
Paper Clamp-$.50
Can of Silver Spray Paint
Duct Tape

Step 2: Making the Blade

Start by tracing out the pattern for your blade in pencil on the foam board. My base was about 1 5/16 in. and about 8 1/2 in. tall.

Then, cut out your blade using your knife. Use a ruler to give it a nice, straight edge.

Take it outside and give it a nice coat of silver spray paint. Don't over do it though! You don't want any runs. I found that foam board dries surprisingly quickly, so by the time I got it back up to my dorm, it was already dry to touch. Once one side is dry, flip it over and do up the other side.

Now let it all dry for a bit while you work on the arm part.

Step 3: Working on the Arm Bracelet Thing

The next thing you're going to want to do is make the part that stays on your arm and launches the blade. Start by taking your toilet paper tubes and cutting them in half from top to bottom (see picture). I found it helps if you score it lightly a few times before cutting it.

Set one aside and put the other two together.

Cut/poke a small slit through both rolls, about big enough for a brass fastener. Insert said fasteners.

Step 4: Putting the Blade to the Bracelet

Now that your blade is dry, compress the edges a bit with your fingers, i.e. pinch the edge. This will make it look more blade like. Also, score lightly down the center of one side of your blade. Pinch/fold it a bit with your fingernail till it's a bit curved. Be careful towards the tip not to break it!

Now, make two fastener sized slits towards the bottom of the blade, one closer to the bottom and one above it. Insert two fasteners and fold the top one down, but not the bottom.

Now, make another slit in the bottom of the tubes (in the center). Insert the unfolded fastener on the blade into the slit. This will hold it in place while you mess with it/attach rubber bands.

Next, take two rubber bands and string them from the two fasteners on the tubes to the upper fastener on the blade. The shorter/tighter they are, the better. Now take a piece of duct tape and tape the fastener on the blade so the rubber bands won't fall off it.

Step 5: Putting the Cover on and Finishing It Up

Next, take that third TP roll and bend it so it fits over the blade. Make sure the tube doesn't obstruct the blade's movement, but that it's close enough that the blade won't pop off from the rubber bands.

You may see in the pictures below that I didn't use a TP tube. This is because I didn't read the instructions fully and I didn't take more than two tubes from home (my college doesn't have tube TP, it's all paper core). That being said, the cardboard from a 12 pack of pop will work fine if you cut it to the size of a TP tube.

Use your handy duct tape and secure it. Cut a bit out of the bottom of the the 3rd tube so you can clamp the blade to the bottom tubes. Now take out the bottom fastener that held the blade in place and use the paper clamp to hold it there now.

Now you have a hidden blade!

The only thing to do now is secure it to your arm. Get a strip of duct tape, sticky side up, and tape from the inside of the device over your arm to the other side. Place another piece of tape on top to keep it from sticking to your arm/clothes.

Step 6: Tips and Advice

A few general tips before attempting this build.

First off, you may want to reinforce the tip and upper section of the blade with duct tape. My tip broke about halfway through the day. It might be fine though if you're just going trick-or-treating, but if you're planning on wearing it a while/stabbing people with it, you'll want to reinforce it.

Buddah_123 suggested cutting some popsicle sticks and adding them to the edges of the blade to reinforce it. This seems like a good idea, and he says it works, so I'll trust him on this.

Second, if I were to do this again, I would use 12 pack cardboard so the bracelet part could be longer. This way, the blade could go further down the arm and be more hidden, compared to what I had with it sticking out on my palm. Also, use tight rubber bands. This will make a better spring and "pop out" effect.

Finally, this can be used with a string attached to the end of the clamp and running through the shirt to the other sleeve. A quick tug, and the blade is released. This takes a bit of practice, but it looks sweet.

I'm sure you can customize it more if you want. Also, if you want to stab people without it breaking (seeing how it's retractable and works like a prop blade) I would suggest some sturdier plastic (not too sturdy), shaping it, and painting it silver.

Overall, be safe, have fun, and enjoy!

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129 Discussions


1 year ago

btw the one im showing is mine

This is hidden blade..

not as easy to make as this one, and is actually a deadly weapon, but you should check it out. Nice build here sir!


7 years ago on Introduction

If you want to make a weapon, just use a simple knife!!! I mean, you can't pull the string, and then it gets stuck or something in a fight!!! Just take a Butcher Knife, lol!

1 reply

Reply 3 years ago

You realize inept doesn't want it necessarily as a weapon, but as a form of entertainment


5 years ago

the arm bracelet thing is called the bracer

Is it prone to breaking, being made of cardboard, or falling off, being secured with duct tape?


10 years ago on Introduction

:D :D :D :D :D I made one! I used some scrap cardboard, tape, key rings, a rubber band, and hot glue. That stick thing connected to the rubber band is connected to the blade. It rest in the notch in the back so the blade won't move. Then I hit the stick out of the notch and the blade shoots out. Nice for one day of work eh?

8 replies

Reply 9 years ago on Introduction

could you flick your wrist clockwize to have it pop out? or is it just hitting the peg?


Reply 9 years ago on Introduction

Actually, that may be a  good idea... I was out of ideas and that thing is long gone now, but I could always try again, eh?


Reply 10 years ago on Introduction

Very cool! I like the key rings. It makes it look more like a wrist thing with buckles. I was actually going to make a switchblade type thing for a movie I'm doing soon. Glad to know that the notch method works with the rubber bands like that.


Reply 10 years ago on Introduction

:P Thanks for the reply! I got comments at school about it too from people that also play. I didn't take it to school though lol, just pics.

The Merryman

7 years ago on Introduction

You guys should try using the following items & see where you get with these little instructions, I made one & it held up. Try those white retractable curtain rods so it can be retractable; Eat all of these & use the can:[ ] to attach the retractable curtain rod into & cover your wrist, I recommend using electrical tape but duct tape has worked alright as well. Use a pair of pliers to stick a double edged blade (or whatever type of blade you prefer for it's purpose)into the curtain rod. From there on just work on it to make it more comfortable for wearing. :D Remember be safe & stay out of trouble with this thing, it's very dangerous.


7 years ago on Introduction

lol looks great for a foundation for the real thing.