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small simple dart gun powered by a flammable substance.

Step 1: Gather Your Supplies

highlighter
pen tube
peizo electric lighter ignitor
duct tape

Tools
knife
hot glue gun

Step 2: Put It Together

take the pen barrel and insert it into the highlighter front side put some hot glue were it was inserted then set up the ignitor by using some hot glue and glueing it to the side of the highlighter then set up a spark gap by poking 2 holes in the tube using your knife and inserting the wires close together.(the closer hte wires the hotter the spark is) now wrap the ignitor in duct tape so when you push the button it wont fall off.Now put hotglue were each of the 2 wires for the spark gap were inserted so there is no leaking of liquids.

well your done and all you have to do now is use a fuel source that works and a paperclip to jam the projectile down the barrel (just a suggestion use a needle and poke it through the barrel so when you put in the projectile it doesnt fall through)to anyone with suggestions to make this any better feel free to post
The instructable could be greatly improved.
yes i completely agree
<p>me too</p>
definitely
sorry about my bad picture but i had to scan it with my scanner instead of take a picture because i havent bought a new camera since my last one broke
thats okay when i made this gun i shot my sister and she ended up in hospital jokes lol!!!
hey, i think his one picture is better than 20 pictures taken from close up without the flower-button being pushed.
Lame
hello, I was wondering if I could use the picture above of the dart gun. I want to use it for a school project, but my professer wants prove that I have permission to use the picture, so I figured I should ask. I would appreciate it, thanks.
Try buying a stick of solid rocket fuel and cutting a small (i mean SMALL, its rocket fuel) slive and sting down to the bottom. if u have bb's then its like miniature shotgun. its pretty flippin sweet.
youve got me addicted!!
Uh dude this gun is really supposed to be a potato gun, just stick the barrel into the potato and make sure the barrel is full of potato pieces and then you know just spray and fire, or you can use bbs just put one in the front of the gun and fire, but I took a short clear tube and put it onto the front of the pen and the bb will go further and harder just like an airsoft gun
HELP BORED BOY! I WANNA DO THIS THING NOW I MADE IT. BUT I DONT WANT MY MOM TO HEAR SHE IS TAKING A NAP IN HER ROOM WITH HER DOOOR CLOSED AND IM UPSTAIRS WITH MY DOOR CLOSED VCAN I SHOOT IT IN MY ROOM WITHOUT HER HEARING?
umm this is only a prototype for larger sizes such as the last one i made to shoot ping pong balls that used a pringle can and a paper towel tube
These smaller launchers can't provide enough force to launch the potato. Thus BB's are used. However airsoft BB's are much better because they're lighter and the .12 cal BB's fit wonderfully.
Pfft, weak. It's better when you use a pill bottle to have a larger combustion chamber. You hardly need any fuel in these small launchers, this one must be terribly difficult because it's much small than others that I've made.
I've try this one with lighter gas (butan gas) and it works maybe 1 of 30 trys. what am I doing wrong here? please help...
you need to give it more oxygen
ah I made one of these specifically for BBs from the barrel salvaged from one of those £10 cheapy electric bb guns and used a blob of superglue (tiniest bit will do) as a stop for the BBs, you can load the whole barrel and i make a mini shotgun that is actually very powerful though if you coat the BBs in oil the seal the tube and create a more powerful toy... Too much free time guys gimme a project
just a quick question, does the plastic melt at all?
No, it is such a quick blast that it will just get a little warm
now al we need is a supa-dupa-fully automatic gun!
awesome. Could you posta video of it?

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