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How to Make a Mini Cannon from a BBQ Lighter

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video How to Make a Mini Cannon from a BBQ Lighter
This is how to make a mini combustion cannon sized to fire airsoft pellets. The only materials required are a BBQ lighter, a few screws, epoxy or other strong glue, and a drill.
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harry883 years ago
what is the exat brand / exact model lighter
NightHawkInLight (author)  harry883 years ago
Sorry for the delay. I used a 'grill zone flexable lighter'

where did u get the lighter

tato3123 years ago
Hey, im building this cannon but im using lighter fluid as the fuel for it.

The thing is that I cant get it to ignite. There's a spark and everything, but it just wont ignite. Ive tried using more fuel but still nothing happens.

But when I take the rear bolt out and light the cannon with another lighter.. BOOM!
A lot of fire

I dont know whats wrong... Can someone help?
Thanks
CurtR tato31212 days ago

Lighter fluid will not work because it doesn't vapourise to give an explosive air/fuel mixture. That's why alcohol, hair spray and ether are best.

Sounds like the fuel / o2 ratio is off....i.e. you need more air.
cj8675 tato3123 years ago
are you using 91% rubbing alcohol
you might be adding to much gas it also it is a bit harder to make lighter fluid ignite unless its a steady stream of gas
Sounds like the fuel:air mixture is way too high try using less fuel :)
NightHawkInLight (author)  tato3123 years ago
You can't use butane in this, the chamber is too small. If you add more than 3% of the volume of the chamber worth of butane it won't have enough air to ignite.
meeeeep2 months ago

I have a problem. Here's what happens when I use this:

1. Add rubbing alcohol (91%)

2. Click! Click! Click!

NightHawkInLight (author)  meeeeep2 months ago

Sorry, I deleted my first reply because I thought you were commenting on another project. Can you see the spark in the chamber? If it's bright neon blue that means you have too much fuel. If not, you probably don't have enough fuel.

lgarza31 year ago
can mouth wash be used
so i built mine, but it won't fire. i rewatched the video, the only alcohol i have in the house right now is 70% so i think that might be the problem....

what other fuels can be used in this?
Awesome
Do you have to re-swab it every time?
jbaker222 years ago
DO you have tO register it as a firearm?
Do you have to register a potato gun? no.
Awsome instructable I would have made it but my sister filled that metal pipe with crayon wax but I totally want to make it.
how old is she? my sister is 9 and she desroyed the thing by using it to play war against her american girl dolls.
awesome lol
h8864 yapoyo1 year ago
LOL XD
*sigh* sad isn't it...
just melt the wax out
Thank you so much for this! I love shooting my cat with it xD
I used a pill bottle and nail polish remover instead, works just as good or better than the fuel resivior
chewie6162 years ago
i have hydgergen peroxid will that work and sorry for my spelling ellectric shoker is ausome and i hope i make it right your epic!!!!!!
teknohawk2 years ago
Will it effect the explosion if you use 70% rubbing alcohol?
Well, apparently this instructable has been up for a while, but i never saw it Dx
WOnderful piece of work. I finished building mine, but only got it to shoot once... i see from other comments that fuel to air ratio is a problem, but have no grasp whatsoever of how much alchohol to apply... Any advice on that part?

Thanks and awesome work
Yorick142 years ago
Does the bbq lighter cannon works with deodorant?
Yorick142 years ago
Does it works with deo?
Airsoftgeek2 years ago
First, can I use electric tape to cover the self-tapping screws and can I add the fuel from the barrel?
I used model glue (plastic cement) and it seems to work pretty well.
fps?
Feet per second
What happends if you put the 2 bolts to close
KL5054202 years ago
Ok. I have two questions. 1. How far does the gap have to be to create a powerful spark. 2. Examples of fuel it can be used. Thanks.
Go to this link now http://www.instructables.com/answers/Airsoft-gun-102/
gunner2232 years ago
is the screw at the back of the cannon air tight
NightHawkInLight (author)  gunner2232 years ago
Yes, for the most part. It might let a small amount through.
thanks
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