AA Cannon

There have been a lot of "guns" posted lately that utilize rubberbands. I deciede to share my AA cannon. Sorry that there is no pics of it being built (I built it quite a few weeks ago and took no pics) but you should be able to build it with my directions. It will put a AA battery out of sight.
Also, it is really cheap; it only cost me about $13
It really is a very simple, small scale pneumatic cannon. Overall length is about 18 inches, height is 4 inches. The barrel and air chamber are both removeable, which makes it easy to modify.

Step 1: Get parts

Okay, here's the part list and where I got them.

These materials I got at Lowes Hardware:
One 12-inch long 1/2-inch nipple (pictures 3 and 4)
One 1/2-inch ball valve with threaded ends (picture 6)
Two 1/2-inch close nipples
Two 1/2 inch elbows that are threaded (screw on) on one end and need to be glued on the other
One 2-inch to 1/2-inch threaded reducer
One 2-inch coupler
One 2-inch cap

These I got at Ace Hardwate:
One PVC Purple Primer (trust me, you need this if you don't want it to leak)
One PVC Cement
One roll Teflon (Plumbers) Tape
2 inches of 1/2 inch PVC pipe
8 inches of 2 inch PVC pipe
MAKE SURE YOUR PIPE IS PRESSURE RATED!

These I got at Schucks Auto Supply:
One pack (icludes two) tire replacement valves for a .453 rim hole (picture 2)

Comments

[JuriusV]

Could you pour some water into the air chamber then pump it up as usual and then fire it.Would it turn into a water gun?

[twodogs]

what do you do if you do happen to find a leak? e.g: super glue it or something else?
plz reply thx

[dog digger]

Depends where the leak is. If it's on the threaded connections, It's ok. Use some more teflon tape. Anywhere else, tell me

[SCrid2000]

If there's a leak, throw it away. Seriously. Leak = weak point for it to explode later.

[DELETED_Nicker987]

(removed by author or community request)

[da man]

How'd u sharpen the barrell? if u didn't, thats ok but it looks lyk u did

[Dr. Explosion]

Why would you want to sharpen the barrel? Just wondering

[carpe_noctem]

spud guns usually have sharpened barrels so you can cut a perfectly fitting chunk of potato and load the gun in (gasp) only ONE easy motion!!!
talk about a marvel of modern engineering

i think that would add to the versatility of the gun >=-)>

my smiley grew his goatee out

[carpe_noctem]

wow this post is 2 years old. the sensation is similar to finding a doodle from your early childhood.

[DELETED_Nicker987]

(removed by author or community request)

[da man]

k, just wondering how 2 sharpen pipe, any ideas?

[carpe_noctem]

file

[Amphithere96]

why don't you just use a sanding machine?? dad has one

[drummonkey92]

if the pipe walls are thick enough just use a hand file doesnt take long at all

[DELETED_Nicker987]

(removed by author or community request)

[da man]

champion, im 13 and love 2 build things of any description, but i am limited by the tools i have. to tell the truth i only have a vague idea of wat a dremmel is, let alone own or know how 2 use

[evilgenius 398]

i don't have many power tools either (:P

[2 stroke]

yeah im 13 too i only have a drill

[rocketkid]

lots and lots of sandpaper =)

[TETRANITRATE#2]

a dremel is a rotary hand tool that will down objects to a fine point. imagine a straight stick like drill with a sharpening bit incase you still cant figure it out here is a link

http://www.weetoysoldiers.com/articles/2007-01-02_dremel-magnets/2007-01-02_DR_22169_dremel-tools_500x.jpg

[Derin]

well I don't possess one but i saw lots of dremels at my hardware store which i was lost in even tho i visited it 1m times there was something called Dremel Stylus

[rocketkid]

i highly reccomend. they are really easy to controll at high rpm's

[Derin]

hmmm it was too expensive since it gets imported over the water from america to Turkey go figure

[commentnlookr]

is this the cannon expressed on the coke cannon instructable as a comment,
"my own design, able to shoot batteries over 200 ' at 90 psi" ?

[SCrid2000]

I'm not sure what you're talking about...

[mattias law]

i want to try and make one of these which has a compact bike pump built into it. so t will basically be the same as using a water gun. i wonder if you could take apart a water gun and use it? hmm

[NCRatSniper]

....and then it goes boom in your face and we all laugh <3333 good luck using paper-thin plastic.

[mattias law]

im actaully thinking of using a water bottly as the chamber where the air goes in, have you heard how much pressure they can take its quite astounding, one of those small 500ml bottles can take about 80psi. its more just the pump for the water gun that im using

[Madrias357]

Use a 2 liter soda bottle. They're made to be pressurized and can take a lot of force. I used to use those on the 4th of July. fill them with about 120 PSI and keep going till you get an explosion.

[geoslim13]

watch the news his gun got blocked and he kept filling to 200 psi then boom (look for it till it happens)

[struckbyanarrow]

that is why on all 3 of my pneumatic cannons i placed a 150psi air release valve

[LED master22]

is it just me or is everybody think that its kind of cheap and stupid to use a bicycle tire to inflate a pressurized chamber?? im not tryin to make a put down, but thats actually stupid....nice though

[bylerfamily]

Please mention 1 other way to fill the chamber.

[geoslim13]

air compresser works well and with a release trigger used to blow air can become your chamber like when i shot my dad with a nerf dart with this and he coouldnt sit down for a month

[NCRatSniper]

Fan air into it then close it really fast.

[bylerfamily]

Not really the best way to pressurize the gun...

[Madrias357]

Or you could fart into it.

[struckbyanarrow]

hold a lighter to the front of the gun!

[A good name]

Lmfao "Or you could fart into it" - Win.

[Madrias357]

Couldn't resist. That joke, though, is so old between my friends and I. Marshmellow guns (PVC design, blow into one end, ammo goes out the nose, that design) and one of my friends hit me with, "You call that a shot? I could fart into it and the thing would go faster!"