Make a Pencil Cannon

So yesterday I was sitting around our house and had a brilliant idea. Nothing. I was just goofing off and made this "Pencil Cannon."  I am calling it that because I don't know what else to call it.  I was sitting around, hanging out with my cousin when I just started making one, it turned out pretty good for being the first time I ever made it. So, now i will show you all how to make one of your own.


-Pressing against someone's arm, pulling back, and firing the end of the chop stick into their arm.

-Put a third or fourth of a shop stick down the "barrel" of the Pencil Cannon and fire it and have a war with friends


May cause bodily harm if aimed at a person. Take extreme care of what/who you aim at. You may have this weapon, but they have their fists and may beat the hell out of you.

If you use this at work you could get fired.

If you use this at school you could get suspended/expelled.

Use at your own risk.


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Step 1: Materials

The materials you will need are as follows:

-A mechanical pencil. (For the barrel of the cannon)

-Two(2) Rubber bands.

-One(1) Chopstick.

-One(1) to Two(2) Twist Ties. (Can be found at most grocery stores, near the produce, such as tomatoes, carrots, corn, Etc.

-One(1) Pair of Scissors.

-Common Sense. (Which is not too common...)

If you would like to make wooden projectiles you will need the following:

-Another chop stick.

-A knife.

Also, if you would like to color the chop sticks, I would recommend using Sharpies.

Step 2: Take Apart the Mechanical Pencil

Simply disassemble the mechanical pencil.

Step 3: Cut, Tie, Twist...

Cut the rubber band at one point in it.

Take one end of the rubber band and tie it to the end of the shop stick.

Now, just below the knot of the rubber band, wrap the twist tie as tight as you can around the rubberband and the chop stick so that the rubber band can't move.

Step 4: Put It In. Stretch It Out. Bind It in Place.

Insert the Tip(labeled in first picture) of the Chop Stick into the tip of the pencil(also labeled).

Now stretch the rubber band out til it's about an inch past the end of the pencil. (I had a random thumb tack on my desk, so I used it to tack the rubber band in place so I could take the picture. Don't worry, you don't need it. It would make this harder.)

Now, grab your other rubber band, and about 1/4" from the end of the barrel, wrap it until you can pull out the rubber band far enough to get your thumb under it.

Now, to finish your cannon enough so that it can be used, Stick the end of the first rubber band through the loose part of the second and wrap the second rubber band around the end until you can't.

Step 5: Finishing

To finish this, you may want to take a Sharpie or regular marker and put a line around the chop stick, about an inch from the tip of it, so that when you put it back, you won't pull it out.

Soooo... Here's something I just did. I added another rubber band that goes over the knot and zip tie on the chop stick because 1.) it makes a good grip. And 2.) it make sure that the know and Twist tie won't slip.

As a final note, if you have any ideas, questions, or advice, feel free to post them.

Finally, if you don't show your friends this Instructable, you could easily to get them to pay you at least 2 bucks per weapon, and probably 50 cents per projectile, if you make it out of wood.

Also, to make one of these projectiles, simply cut the second chop stick into 3 even pieces and sharpen the tips of them about 1/4 an inch from the end.

Thanks for Looking at this, and have fun warring with your friend, or if you wanna be mean, enemies.


Step 6: Idea...

Think of it. If you had a metal pipe, a bungee cord, and some wooden dowels or something... you could make one of these, but like HUGE. And POWERFUL!

Also, get some duct tape and wrap it around the barrel (the black part with the chop stick inside) so that it won't break/shatter from a lot of use.

Try taking this outside and see how far you can get it to shoot, and finally, for more power you could use two rubber bands (one on each side) instead of one to supply the power for launching things so that you can fire it farther.

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    3 Discussions


    7 years ago on Step 5

    haha sweet and i love the endig