Introduction: Mini Potato Gun

Picture of Mini Potato Gun

Easy step by step instructions will show you how to build a mini potato gun that will easily fit in any pocket out of materials you have probably have at home. WARNING... this is still a gun no matter how harmless it may seem. Don't shoot this at any people or animals.

Step 1: Materials

Picture of Materials

Things you will need:

x1- large can of cheap deoderant (hair spray gums up the chamber)
x1- chapstick container
x1- Bic pen
x1- crapload of tape (preferably electrical)
x1- lighter sparker (can be found in long BBQ lighters)
x1- sharp knife that comes to a point
x1- needlenose pliers (optional, but recommended)
x2- short sections of thin wire
X2- thumbtacks

Step 2: Readying Materials

Picture of Readying Materials

Pliers should be used to pull out both ends of pen and twisty thing on the chapstick container.

The back end of the pen may need to be cut off. You will also need to cut out the wall inside the chapstick container.

Step 3: Attaching the Barrel

Picture of Attaching the Barrel

The barrel needs to be wrapped with tape until it fits snugly into the chapstick tube.
once its in the tube, tape the outside so it doesn't come off when you shoot it.

Step 4: Ataching the Ignitor

Picture of Ataching the Ignitor

-Two extra wires should be atached to the metal part and existing wire on the ignitor.

-Then the exposed ends of the wire should be wrapped around the metal part of the thumbtack.

-Then the thumbtacks should be pushed in at a 90 degreese apart from each other one inch from the cap (refer to second picture).

-It can be shot like this or you can see further instructions on how to make it all into one handheld package.

Step 5: Finishing / Tips for Shooting

Picture of Finishing / Tips for Shooting

-ignitor can be taped down
-excess wire can be cut off or taped down

~When firing only spray a little propellent in the chamber or it wont shoot.
~When you shoot always hold the cap on tightly or it will shoot off and hit you, I know this for a fact.
~One very tiny amount of spray is good for at least 2 shots if not more
~if it doesn't shoot check for a spark, if there isn't one its shorting out somewhere
~if it wont shoot and there is a spark, you put to much propellant in
~tape around thumbtacks to avoid getting shocked


ajensen19 (author)2013-09-02

I used a medicine bottle instead of a chapstick bottle. Check mine out:

jbend (author)2011-06-22

look at mine i used matches insted.

leeroyyjenkinss (author)2011-01-11

made it, cant get it to ignite tho. any suggestions on a more volatile fuel??

Dominate (author)leeroyyjenkinss2011-01-26

MAP Gas, Propane, or even that butane from the lighter you tore apart.
These are good propellants plus they burn a lot cleaner than aerosols.

bubblebut (author)2011-01-15

how do you get the lighter sparker out?

knex luver234 (author)2010-11-18

heres mine, i call it the cricket

Dread_Neck (author)2010-11-11

Heres one I made w/ a laser pointer(dead on accurate)

knex luver234 (author)2010-11-08

alright, posted a slide show, should be up soon, check it!

knex luver234 (author)2010-11-07

capn tac, i canget like 100+ feet with one made from pill bottle shooting eraser!

knex luver234 (author)2010-11-07

mechanical penci erasors, ive shot a few ear cleaners, ok, the mad darts, litttle better, but nothing can size up to an eraser from a mechanical pencil, even if it is blunt, it has awasom penetrating power and speed!

knex luver234 (author)2010-11-06

ok, tried this, then went to glue stick, the to those creamy seethrough yellow pill bottles, and i have to tell you, the pill bottles work the best, i think they have the right O- propellant ratio,, and i tell you, mine is powerfull, shot it in my room for the first time with an eversharp eraser in it, Boom! parents came in thinkin my room blew up, so i threw it under the bed real quick, said it was my power strip thing for my tv! so funny.... no more shooting in the house! i might post a vid or post it if people want.

Derpancakes (author)2010-09-18

hey.... this is from miniweapons of mass destruction!

twenglish1 (author)2008-09-06

pretty cool im going to make one now and another thing that is fun to shoot is airsoft bbs the fit right in the barrel

zack247 (author)twenglish12009-12-20

wouldn't they slide into the combustion chamber?

witmoreluke (author)zack2472010-08-24

You'd load it like a muzzle loader. Put in some packing, (napkin, paper towel, newspaper, whatever. Just make sure that there are no gaps between the packing and the tube. It should also be longer than it is in diameter so that the packing doesn't flip sideways.) pour in some airsoft bb's, and some more packing that just holds the bb's in, and can be smaller than the first packing.

zack247 (author)witmoreluke2010-08-24

oh... ok then

supercolio (author)2010-08-14

Freaking sweet :P

yoyojoeco (author)2010-08-13


CapnTac (author)2010-07-05

Before I use my only igniter on this, what's your average range on this thing? I'd like for it to be at least around 20 feet, my friend and I started a war recently of improvised weapons, and I'd love to whip this little guy out of my coat pocket and shoot him with it.

cherishcherub (author)2009-12-24

 this might be kinda obvious but not to me..

a) how do u load it

b) how do u fire it

recyclebin (author)cherishcherub2010-04-11

a) take the cap off and put in the propellant, then put the cap back on. put the ammo in the barrell then push it in a little ways

b) squeeze the shockey thing

  i made a better instructable of this look at it

sk8fux (author)2010-01-18

I made the damn 12:00 AM ...was bored, relized I had nothing for fuel lol....ended up taking a pen cap and putting on an air duster can...fits perfect and launches the little potato pretty far....

so if anyone is lazy they can use that lol

sk8fux (author)sk8fux2010-01-18

Good little design though, hopefully mine works when i grab some hair spray tomorrow...

also ...i took a bbq lighter, drilled a hole in the cap and taped it onto it so it's like a little handle with a trigger on the cap

Tmbo17932 (author)2009-07-09

what can i shoot out of it???

yeolddingdong (author)Tmbo179322009-12-27


zack247 (author)Tmbo179322009-12-20

i shoot mini pompoms from the dollar store, i don't want to have to be cleaning up mushy potato lumps

Tmbo17932 (author)2009-07-09

and where am i spraying the deoderant?

zack247 (author)Tmbo179322009-12-20

into the chamber

ipittyu007 (author)2009-12-10

holy crap that is amazing....and the part about it being a little dangerous is even better.  =)

whiteboyninja (author)2009-12-03


prestonm (author)2009-12-02

mini blow darts......

AceDaPig (author)2009-09-20

Absolutely amazing, I finished mine a few nights ago, and just got good at shooting it. Already convinced a few friends to make them too.

recyclebin (author)2009-02-15

its a mini potato gun dipshit

REALLY?!?!?!?!? they make mini potatoes?!!?!?! if they do i want some!

2 words: tater tots.

maalik (author)2009-07-01

mine wont work i don't know how ?? can someone help

DurkaDurka (author)2009-05-27

Hey, just thought i would tell you about my version of this I used an old pill bottle, the orange small ones. i pretty much did every thing you did, except, the barrel is attached to the lid, so the barrel screws off Also, for the barrel, i used and old airsoft gun barrel, i took it apart a while ago, and thought hey, why not? Its not the entire barrel, just the metal rod. its the sam size as a pen, except its 2 feet long :D haha and having a longer barrel makes it go faster with less pressure. so its pretty fast

sturaine (author)2009-03-20

Wow that thing is so cool its like a handheld potato gun its so cool.

WiseMagnus (author)2009-02-22

I need help. Can you buy electric sparkers?

recyclebin (author)WiseMagnus2009-03-02

you can buy lighters with sparkers

WiseMagnus (author)2009-02-22

Maybe the tacks are too far apart. Just a guess....

nc527 (author)2008-12-11

i made this, but used this like big screw top pen as my chamber. i just hammered the bic barrel down the screw part.then screwed it back in and then put some electrical tape around it. works great btw. for my hairspray, the sweet spot is about a 1/3 of a second of spray.

robi2581 (author)2008-04-12

Are there other propellants that you can use besides hairspray or deodorant? I don't have either and I am to cheap to go out and buy a can just for this.

officeblueprint (author)robi25812008-11-26

bug spray works great also i heard of the touch up paint from car glove boxs but use a small amount cuz the sh** is flammable

WhiteTigerTails (author)robi25812008-07-03

Use AquaNet, or butane.

use bug spray. it works great

struckbyanarrow (author)robi25812008-04-16

aerosol air freshener works gr8!

recyclebin (author)robi25812008-04-12

You could probably use either butane or lighter fluid (you'd need to let it sit for a little bit so the fumes would fill the chamber).

sesimi (author)2008-10-08

we love u. thankyou so much. you are a pure genius yes

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