Introduction: Collapsible Pocket Crossbow

Picture of Collapsible Pocket Crossbow

I got bored one day in school so I took out some pens, scissors, and duct tape and did this in about an hour. This is the first crossbow I've seen that's collapsible.

Step 1: Materials

Picture of Materials

To build the crossbow, you need- Supplies- •3 Normal Disposable Pens with tubes •1 or more Pilot G2 ink cartridges (at least one empty) 1 is fine, the others are for ammo. •a couple of rubber bands- you only need one, but you need to see which one fits best. Tools- •Good Scissors (for cutting pen in half) •Hot Glue Gun (recommended)/Super Glue/Duct Tape •Small Scissors/Screwdriver/Drill (something to drill holes in the pen tube with)

Step 2: Cutting the Pens

Picture of Cutting the Pens

So first you need to dismantle all of the disposable pens, and just keep the tubes. You can keep the ink cartridges if you want to use them as ammo later. You are going to cut one of them in half in the middle. Then, take the empty Pilot G2 cartridge and cut it off right under the yellow goo. It gets everywhere so don't cut the part with the goo.

Step 3: Making the Ammo Track

Picture of Making the Ammo Track

Take one of your pen tubes and cut it lengthwise down to about a centimeter from the end on both sides. SIDES not ends. Then cut away one side to open it to put in ammo.

Step 4: Drilling the Hole

Picture of Drilling the Hole

You are going to take the third (base) disposable pen tube and drill a hole in it wide enough to fit the cut piece of G2 cartridge. It has to be tight enough to hold it in place, but loose enough to pull it out when you want to collapse it. You can use a drill, scissors, a screwdriver or something else sharp.

Step 5: Putting It Together

Picture of Putting It Together

First, stick the cut piece of G2 cartridge into the hole on the base tube. Next, slide the halved pen tube pieces onto each side. Then, hot glue the ammo track down onto the base tube, about a centimeter from the end with the arms (cut tubes). The track has to be shorter then the tube, so trim it off a little so it has room on both ends. Also, before you move on to the next step, I suggest cutting some off the ends of the arms to make it look better and to make it easier to "string".

Step 6: The Bowstring

Picture of The Bowstring

Now you're going to attach the rubber band. You need to put it around the two crossbow arms, either by taping it or cutting slits in the arms to hold it. If you have a long rubber band, it's better to tape it so it makes the band shorter and tighter. If you have a smaller band, you should cut slits/grooves on the ends parallel to the pen tube body to hold it, so it won't snap when you're cocking it.

Step 7: Collapsing and Finishing

Picture of Collapsing and Finishing

To collapse, simply pull the half pen tubes off the cut G2 cartridge and pull the G2 out of the hole in the base tube to get a slim set of pieces that could fit in a glasses case. I hope you like your new crossbow! It works best if you use Pilot G2 cartridges for ammo, and Bic Round Stic disposable pens. This is my first instructable, so tell me what you think!


wmccormick1 made it! (author)2015-07-31

here's mine with a couple mods, got a ton of targets...I mean neices and nefews

awil (author)wmccormick12015-10-29

nice very nice

ChessAmmo (author)2015-04-21

Looks really cool

jackcolt316 (author)2013-12-15

how do you shoot it?

zephyr14 (author)2013-11-15

What leatherman do u have I wanna get the new wave do u think its a good idea?

daveemajor (author)2013-08-23

Can you make a video?

johnyboy117 (author)2013-07-27

i got the same leatherman

RossTheGreat (author)2013-06-13

No I built this one at home the one I built at school I had to use only those folding scissors.

shotgunshane (author)2013-06-02

Wow your school lets you bring multi tools to school! I want to go there!

cdalton4 (author)2013-05-01

I love it awesome

RossTheGreat (author)2013-04-25

I just entered crossbow in Epilog Laser and I doubt I'm gonna win but I'd be freakin excited if I won runner-up.

RossTheGreat (author)2013-04-25

Dan seriously stop spamming comments.

sorry for spamming and being a Dan but top contest?

RossTheGreat (author)2013-04-25

Dan don't spam comments.

Ross wanna do try to win a contest tell me which one u want to do tomorrow

and u showed it to me so I should know

hi Ross its me Ryan I MEAN DAN!

craftmachine (author)2013-04-25

I'm going to try that!

c3ralki1l3r (author)2013-04-24

If i didnt want it collapsible could i not use a g2 pen :P

nerfrocketeer (author)2013-04-20

Great job! Really clean and professional! Perfect for Nerf!


RossTheGreat (author)2013-04-20

dunnos- you have an amazing profile pic. C&H; FTW!

RossTheGreat (author)2013-04-19

I don't know how to upload videos. Instructable, anyone?

dunnos (author)RossTheGreat2013-04-20

You can upload it to youtube and use the link to embed it in your instructable.

Nice pen!

dunnos (author)dunnos2013-04-20

crossbow* of course... heheh

Ringer1633 (author)2013-04-19

how far does it shoot? You should upload a video.

RossTheGreat (author)2013-04-19

Also- StoryAddict- I'm gonna look at that double-crossbow...

RossTheGreat (author)2013-04-19

Depends on the rubber band. I got around fifteen feet at an angle with a pretty weak one.

i used to make this kind of thing once(i built a self-reloading crossbow based on a museum exhibit i saw(pitt rivers oxford/ipswich natural history)) that is quite a neat design, compact and elegant.but what about power and range?

nish28sharma (author)2013-04-19

Recently used on my girlfriend sitting on the first bench in my math class

nish28sharma (author)2013-04-19

Recently used on my girlfriend sitting on the first bench in my math class

RossTheGreat (author)2013-04-19

Would you believe me if I told you this was my first instructable?

GDADZGSONS (author)2013-04-19

Great job!

Mrdewdew (author)2013-04-19

Great! This looks awesome, cant wait to try it!

StoryAddict (author)2013-04-18

Great job! Can't wait to build my own. Now if only I could figure out how to build the double-crossbow Gretel wields in "Witch Hunters."

Robin329 (author)2013-04-18

Your glasses case is cooler than mine D:

RossTheGreat (author)2013-04-18

Thanks. This is what happens when I get bored after tests.

RossTheGreat (author)2013-04-18

Comments and reviews welcome!

ilpug (author)2013-04-18

This is one of the cleaner pen shooter builds on the site. Well presented, good directions and pictures, and the final product looks good, as opposed to most of the terrible ones I've seen.

Well done.

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