Introduction: How to Make a Mini Dart Gun W/Multiple Fire Modes

I've been playing with the idea of what cool things I might be able to do with soda bottle preforms for a little while now and this is what I've come up with. The dart gun in this video uses two different firing methods that are commonly used in larger potato cannons, a pneumatic firing option, as well as a simple combustion option. A coaxial piston valve is my personal favorite mechanism for these sort of projects, and this video shows how it works quite well through the clear chamber. For the combustion design the fuel of choice is isopropyl alcohol, preferably 70% or greater.

How I made the darts in this video: http://youtu.be/BRUYdmOKLyM

How to make a mini cannon from a lighter (another mini airsoft cannon): http://youtu.be/QGj8xMDRSQ0

How to make water bottle rockets: http://youtu.be/YRtFY_O0HcU

Comments

author
padawan101 (author)2016-08-15

Where did you get the soda bottle preform

author
explocivo12 (author)2015-02-02

how many lighters do you go through in a week? because you use a lot of peso electric igniters.

author
gemoney (author)2014-10-03

Is there a way to fire 3 or 4 airsoft bbs at one time

author
NightHawkInLight (author)gemoney2014-10-03

Yeah, load three or four of them in the barrel.

author
CameronF (author)2014-10-02

I made two versions of this project (awesome, btw):

1. With a 10 oz water bottle. works great

2. With a 2 L pop bottle. Held more air, so it shot farther.

Thanks for another cool project!

author
gemoney (author)2014-05-22

Would alcohol out of the bottle work like vodka for example work as fuel for a spud gun project

author
griffenjoy1277 (author)2014-05-16

I like all of your projects

author
griffenjoy1277 (author)2014-05-16

Cool

author
BikeHacker (author)2014-05-10

Cool!

author
68tobroadway (author)2014-04-23

what if you were to use the hydrogen gas you explained how to make in a previous video as a fuel source? I've always had that thought and have made a few alcohol fueled mini dart guns but have yet to try hydrogen gas so what do you think nighthawk would it work? Future video? It would be pretty fun to try

author
gemoney (author)2014-04-11

well I shaved it down with a file and it's still a really tight fit

author
gemoney (author)2014-04-09

how do you make the piston I am trying to make a coaxial gun with a marker and a airsoft barrel but the piston I made is too tight of a fit in the marker and it won't move should I be concerned

author
NightHawkInLight (author)gemoney2014-04-09

Just sand it down slightly and it will move better.

author
Milz2000 (author)2014-04-03

Great idea by the way

author
Milz2000 (author)2014-04-03

Can you link a website for the performs

author
TrollFaceTheMan (author)2014-04-03

Very interesting Night Hawk, Definatly another quality project :)

author
Milz2000 (author)2014-04-02

Would deodorant work as a propellant as well or any other flammable liquid

author

Alcohol is really the best fuel. Nothing else will work nearly as well.

author
KyleTheCreator (author)2014-04-01

Ingenious project! I like how you used the soda cap as the release for the coaxial piston gun version... I'll have to make one sometime:D How much pressure was it at when you fired it?
Thanks,
Kyle

author

About 60-80psi. The preforms can stand many hundreds of psi before rupturing but the soda bottle caps are the weak spot and can only stand about 100 after they've had a hole drilled through for the valve.

author
nbnoahbezzant2 (author)2014-04-01

Cool !

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Bio: I like turning boring things into awesome things! Usually on video.
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