Introduction: Mini Potato Gun Hot Glue Gun

Picture of Mini Potato Gun Hot Glue Gun

here is a neat little gun I built to help with how hard it is on you're finger to light that tiny pizo ignighter. it fires airsoft bbs at about 200-250 fps do not try to build this gun unless you have experience with mini potato guns or else you will have a very hard time building it and trouble shooting. this gun is very sensitive on what it uses for fuel.

UPDATE the pizo ignighter broke so I am going to try my luck with a camera flash. also I have upgraded the barrel to a metal one I got out of an old airsoft gun. and last using butane nearly doubles the power of the gun and is sounds like a 22cal rifle going off


I have stopped using the cap right now I just hold my finger over the hole and it works just fine if not better

Step 1: Get All Youre Stuff

Picture of Get All Youre Stuff

1 old hot glue gun

2 good hot glue gun that works

3 bic pen all taken apart so all you have left is the pen body

4 a highlighter

5 a pen cap

6 pizo ighightor

7 2 thumbtacks

8 some kind of brass part from a cars brake line?

8 nut glued into bottlecap


1 phillips screwdriver
1 multy tool

Step 2: Take Apart Hot Glue Gun

Picture of Take Apart Hot Glue Gun

remove all the stuff in you're hot glue gun keeping the trigger and glue the pezo ignighter so when you pull the trigger the pezo clicks

Step 3: Combustion Chamber and Barrle

Picture of Combustion Chamber and Barrle

cut the highlighted in half and cut the end off the pen cap(the purple thing) then use it to hold the pen to the highlighted. and glue together glue the brake line fitting on the cut end of the highlighter. and enter thumbtacks. on both sides. I used one screw so I can tune the spark gap size and cut cap tip so barrel can fit thru it this will hold it secure to the hot glue gun.

Step 4: Bringing Hot Glue Gun to Combustion Chamber

Picture of Bringing Hot Glue Gun to Combustion Chamber

hook up all wiring from the pizo to the combustion chamber and click it. you should see a spark jump from the pins. if not then make it work. and set the combustion chamber and barrel in there new home. DO NOT GLUE SO YOU CAN REMOVE IT TO CLEAN YOURE GUN. and don't chop off the end of the barrel. it will reduce the power of you're gun and it wont look like an uzi anymore.

Step 5: Put the Case Together

Picture of Put the Case Together

put the case together and bolt it down and look in the back where the bolt pops out. and pull the trigger do you see a spark if you do than good. if not then take it all back apart and find the problem.

Step 6: Time for the Test.

Picture of Time for the Test.

put propane or butane down the back of the gun. I prefer butane. screw on the back and drop something down the barrel like a 6mm bb. point at something and fire. if nothing happens press 5 more times open cap and lightly blow into back and try again.


admin (author)2008-08-08

This is a great Instructable, but you need to add a main image of the final project to the intro step. Please do that and leave me a message when you have so that we can publish your work. Thanks!

gemoney (author)2013-08-28

how much fps do u get out of this if u use butane compared to hairspray

gemoney (author)2013-08-22

can u use a threaded air soft barrel and put a piece of paper so the bb would not fall down instead of dropping it down the barrel

gemoney (author)2013-08-13

ok do u know where u can get a multi tool because I opened half of it and the parts are out of place now and I cant open the case now

gemoney (author)2013-08-10

can u fire paper darts from it

nibbler125 (author)gemoney2013-08-12

You can fire just about anything out of it that you can from any other mini potato gun

gemoney (author)2013-07-18

but the gas would propel the bb out of the barrel allowing u to put in new gas I guess

gemoney (author)2013-07-17

how do u make a magizine for the gun so u don't have to drop the bbs down the barrel

nibbler125 (author)gemoney2013-07-17

Im not sure how you would make that work, you need to have an open breech so when you put in new gas the old exhaust can go out the barrel.

benduy (author)2011-06-13

i made somthing similar, a MAGNUM out of a old cap gun and redbull shot (empty of course) ans a small peice of pipe to fit snugly in the shot, and made it up and it wasnt working , so i tipped it back and fired, no eye brows and eye lashes :( moral of the story, lighter fluid is heavier than air so it sinks down

cschoemans (author)2011-04-25

this thing is insane. I made a bigger chamber and use a special mix of 60 percent propane and 40 butane did need to put in some isolation because i started melting my gun because chamber is made of magnesium so mare heat but no elctric conduction did need to use a drill but still great design

billbobby (author)2010-04-04

 can you use axe for propelant?

ilpug (author)billbobby2011-03-03

You most definetly can. however, it will smell funny.

haaiids (author)2010-04-16

hello. i have a hot glue gun but it has the triangle screws...any ideas of where to get the screwdriver ??..thanks.

ebubbula (author)haaiids2011-02-24

I had that problem once too i just uzsea a real small alan wrench

ebubbula (author)ebubbula2011-02-24

Sorry used not uzsea

nibbler125 (author)2010-08-22

once again only use butane or propane its a finicy gun and will not fire as good as it can with hairspray. rember hairspray and deoderent are only flamable beacuse of one or two parts. all the stuff that wont burn just gets left behind. butane and propane is all boom and no poop burning cleaner and you can use a higher mix ratio.

ZachMaker (author)2010-08-22

i have no idea what ur talking about when u say hollow compressor thing u dont have a picture of it outside the highliter and i dont know what 2 do could u explain but other than that its a really awesome desighn

nibbler125 (author)ZachMaker2010-08-22

found out its not a air comresser part. Its something from a brakeline from a truck. (i save everything) I would go to autozone and search the random fitting area untill you find something useful.

mattccc (author)2010-04-12

anything that has butine propane or any other flamable substance in it will work

sjoobbani (author)2010-03-14


mossjo14 (author)2009-08-11

can you use hairspray

nibbler125 (author)mossjo142009-08-15

i wouldent mostly beacuse hairspray gunks up youre gun

jcosi97 (author)nibbler1252009-12-10

how about  deodorant

MadBricoleur (author)2009-11-27

I use rubbing alcohol put in a mini spray bottle. one short burst of it when held about 4 inches away from the chamber opening is good for a shot.

Kaiven (author)2008-10-13

if I don't have butane or propane, what could I use?

nibbler125 (author)Kaiven2008-10-14

i got it to work on zippo fuel but youre best bet it to get a butane jet lighter for like 5 bucks and just press the button so gas comes out and hold it for a few seconds

Kaiven (author)nibbler1252008-10-14

i think i'll try hairspray or alcohol in a spritz bottle, but if I need to I will use a lighter.

franklinonline (author)Kaiven2009-08-06

achol if you put too much will kep burning, maybe meling the plastic or softning and making it blow up next time

firefighter1333 (author)2009-04-22

sry for asking so much but i got an other question sooo hope u asnwer well here it is; for some kinda reason ma ignitor keeps breakin the whole time (so i need to replace it all the time;ANOYIN), it breaks each time on the place where the 'button' is (like the neck) do u kno how to solve this (alrdy tried to make te neck stronger; didnt work, there from lighter wich are sumthin like 10 cents a pice btw...) sooo...

its probalby wiggline around the the curve of it is bending and snapping it? try moving it more near the hing of the handle

kwlweapons (author)2009-07-24

Hm if the creator is still there... some improvents/mods I would do would be 1. Make a sparkstrip design to improve reliabal ignition.. with a sparkstrip you can have up to 4 SMALL sparks in your chamber so that it can fire in the first clicks .. This is extremely helpful specially in mini guns. 2. For fuel I would recommend to just get a refillable butane mini tank and attached it onboard so that you can take it anywhere and shoot whenever you feel like it.. plus their only like 2 bucks and you'll get atleast 400 shots out of one. 3. For anyone out there having problems with the back "air compressor part" what I would do is just find a pill bottle or a w/e bottle THAT HAS THE SAME DIAMETER NECK OF THE BACK of your highler.. then just glue it onto the back and use the screw on cap that came with it... PROBLEM SOLVED Any questiones, ask... Anyway good job on the build im gonna build myself one... just a little bit more "Advanced" i might post it if im not to lazy

Flash Gordon (author)2009-06-14

Barrel is spelt Barrel not Barrle

aahutner (author)2009-06-13

when i made a mini potato gun it was very unweildy but this design looks great. i love how it fits into the glue gun. it looks nice

stephenniall (author)2009-04-27

I bet you could add like a sliding mechanisimg in the barrel infront of the bit that lights up and use it to slide put ball bearings in Slide back shoot etc lol

firefighter1333 (author)2009-03-22

sweet looks nice, but i think it looks more like a luger than like an uzi (sorry) nice idea 5*

Lugers are awesome

100% tru, actualy, to make it look more like a luger he has to paint it, add some kind a round thingummy at the bottom of the handholdthing (from the clip) and some kinda tube above (on the place where he has the space where u can see the chamber) for theignition hammer thing. just fros saying (:P)

Yeah and it might even be able to pass off as a luger. A Potato Luger.

lol, only i think it isnt a good idea to use in real war lol XD (*sput* reloadin *only click* say darn and reload again sput say yes he is hurt (right...)) lol

That would be funny

invisiblebluerobot9 (author)2009-04-10

How far does this thing shoot?

good shot will go 30 or 40 yards

if yo chamber is sumthin like 1 inch wide and 5 inch long and ur barrel is 1/5 inch wide and 8 inch long and u hav no leaks how far will it probably shoot then (please could u try to guess (cant measure maself cuz i live in very windy open land...)) pls answer...

NIINO9 (author)2009-02-16

do you have a video ?

nibbler125 (author)NIINO92009-03-19

yes its on youtube but normaly i can make the gun shoot allot better

Father Christmas (author)2008-12-25

i see this having airsoft potential, namely because of the pen barrel lol

apr1694 (author)2008-11-10

wat do you use as fuel

nibbler125 (author)apr16942008-11-13

propane or butane

grevious (author)2008-09-26

"some kind of hollow air compressor part" what the hell is that? well if i read on i should find it.......... :P

About This Instructable




Bio: i like to make wierd stuff im a nice guy if you are nice to me i collect lighters and im always willing to help ... More »
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