Introduction: Coke Cannon

pnuematic pvc marble gun that can easily shoot over a building.
just make sure you like coke or diet coke. Also shoots marshmellows for hurting your friends!

Step 1: Materials

You will need a :
1) 2liter coke bottle
2) 1/2ball valve
3) 1/2 two part screw together coupling
4) 1/2 pvc pipe
5) two 90 degree elbows
6) bike tire valve
7) 1/2 conector
8) epoxy

Step 2: Asemble

glue all of the parts behind ball valve. then assemble like so.

Step 3: Easy Stashing

unscrewable barrel for easy storing

Step 4: Fireing and Loading

unscrew removable barrel load marchmellows in back. Load marbles from front without unscrewing. Pump to until your satisfied. Throw the ball valve. It will shoot really fast so watch out for ricosheting marbles.

Comments

author
DanTDM made it!(author)2014-02-02

BALL VALVE POWER!!!

author
commentnlookr made it!(author)2010-11-14

is the bike valve 1-way?
{can you pump it, take the bike valve off, and walk around to shoot it so you dont have to carry a bike pump when you walk around??

author
DanTDM made it!(author)2014-02-02

Yes it is.

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stahlman made it!(author)2013-07-16

My bad, don't use pop bottles and they are rated to 70-80

author
stahlman made it!(author)2013-07-16

Please for the love of safety do use a pop bottle. Yes, I know they are rate to around 80-70 psi but under constant release and compression cycles it will weaken the plastic and cause a explosion. These bottles exploding could cause hearing damage and lacerations due to plastic shrapnel. Spend the extra 20$ to buy some proper pressure rated PVC and seal it with JB weld.

author
spikemp made it!(author)2009-08-06

Hi, I'm having some trouble connecting the coke bottle to the pipe. The pipe I'm using has an outside diameter of 15mm and my inside diameter of the coke bottle is 22mm. I can't think of any ways to securely and air-tightly connect the two. Any ideas?

author
Pizzapie500 made it!(author)2010-02-12

Sorry for late reply, but how about using super glue and glue it on then duct tape it?

author
spikemp made it!(author)2010-02-12

 Too late mate,
I got a connector piece from 15mm to 22mm then glued a small piece of 22mm pipe into the mouth of the bottle.
Thanks anyway though.

author
Pizzapie500 made it!(author)2010-02-12

Where did you find the ball valve and bike tire valve? I looked for it at lowes and couldn't find it.

author
iceman1 made it!(author)2009-12-10

 actually talleu this is a muzzle loaded air cannon so therefore you could only  get 1 shot out of this air cannon per shot and if you had a pvc pressure chamber and make it larger than your barrel you could use 125 psi out of this air cannon use pvc primer and cement it sets quicker and is cheaper than epoxy it melts the pvc together and it makes them  chemically "welded" together so therefor it has a stronger bonding strength 

author
lemonie made it!(author)2007-02-11

I'm confused by "Also shoots marshmellows for hurting your friends!" - marbles wouldn't?

author
Fake_Name made it!(author)2007-02-14

Marbles dont hurt your friends: at 150 psi, they kill them.

author
bighead5454 made it!(author)2009-11-29

kill? they pulverize uur friends there wont be a friend left if u shoot him or her with a marble

author
instructa-fan made it!(author)2007-05-31

frik yessssss!

author
knexbldr888 made it!(author)2007-03-13

lol

author
bighead5454 made it!(author)2009-11-29

hey load this up with snowballs and shoot passing cars9i am EVIL) Muahahahahahahahaha

author
gunmanx made it!(author)2007-05-06

anyone no were to get pvc for cheep price

author
Ghost+Wolf made it!(author)2008-12-07

$1.90 at Lowes I was there yesterday but I don't know about Home Depot

author
Ghost+Wolf made it!(author)2008-12-07

1/2 inch

author
Ghost+Wolf made it!(author)2008-12-07

First off Lowes has 1/2 inch pvc there and it's 1.90 I didn't add the tax because I don't know where you live hope this helps bye

author
lucek made it!(author)2008-07-30

ask at construction site. they may have scrap

author
seedofanarchy made it!(author)2007-05-06

you could try stealing it, but no one likes a criminal record

author
gunmanx made it!(author)2007-05-06

hmmm theres ppl tht work on my garden and they gave my freinds little bro som pvc to play with i cud get it frm them

author
bigfootduck made it!(author)2008-08-02

I made my own design and it takes about 90 psi! It can shoot AA batteries about 200 feet! I spray painted mine black and green

author
god_gave_knex_to_you made it!(author)2008-10-16

instructable!!!

author
blugyblug made it!(author)2008-03-28

Use PVC Cement... And not epoxy

author
Derin made it!(author)2008-04-22

cement? first pic or second?

2198.jpgTangit-PVC-Kleber-500-g_119__612002_40.jpg
author
blugyblug made it!(author)2008-04-22

Lol theres a type of glue specially made for PVC. And its called PVC Cement. Its not like a powder that you mix with water, you put primer on it first and then the cement. The primer and cement contain ketones which melt the PVC together. The primer is completely made up of Ketones, but the cement has Ketones and some type of glue. "cement' is actually wrong, it should be called welding or solventing. Search "How to Solvent Weld PVC" theres an instructable on how to do it.

author
Derin made it!(author)2008-04-23

well the glue on pic no 2 works wit no primer

author
bigfootduck made it!(author)2008-06-11

PVC cement is a bottle of usally a dark blue color of glue. It comes with a brush. You just put it on a PVC pipe and stick together. It dries on like 10 seconds and is impossible to separate without cutting it. It's also air tight.

author
blugyblug made it!(author)2008-06-11

YEah, its a liquid lol. Just use what you are supposed to use, PVC Cement. It doesnt dry in 10secs, it takes like a day to fully cure. Unless your talking about setting...

author
Derin made it!(author)2008-06-13

my glue is same

author
blugyblug made it!(author)2008-06-13

Fine, you can use your weird glue but your gun will probably blow up. PVC Cement costs like $5.

author
Derin made it!(author)2008-06-15

i know it can blow up but we dont have pvc cement where i live *goes to grab pvc welder*

author
Derin made it!(author)2008-08-02

Yes,they make welders for pvc:)

author
Derin made it!(author)2008-06-13

well the same thing goes with the glue except 24 HRS setting time

author
lucek made it!(author)2008-07-30

not true. this stuff makes the 2 pipe parts 1. it is fing strong.

author
blugyblug made it!(author)2008-04-23

But thats not PVC Cement. It won't be as strong as PVC Cement welds.

author
edukdu made it!(author)2007-03-31

A PET Bottle can carry more less 60 psi...at 70psi it will inflate like a ballon...but it can hang on... See ya Edu Gomes

author
lucek made it!(author)2008-07-30

I've seen the go up to 200psi in bottle rockets.

author
lucek made it!(author)2008-07-30

this reminds me of the chicken gun on mythbusters... like a lot.

author
instructa-fan made it!(author)2007-07-08

PLEASE private message me on how the hell you got the stem valve into the elbow piece... Thanks!!!!

author
Dr.+Explosion made it!(author)2008-06-17

Just drill a hole in the bottle and put it in there or refer to my instructable Another Air Cannon for another option. WAY easier!

author
soccer9270 made it!(author)2007-05-27

can the gun shoot a marble and then shoot again without pumping it twice?

author
Dr.+Explosion made it!(author)2008-06-17

No, you'd have to open and then close the ball valve extremely quickly to have any pressure left at all in the chamber. You would need something like a trigger that is really really fast.

author
jc817 made it!(author)2007-12-22

The setup has a ball valve, so no, all the pressure is released in one shot. You would have to pump it after each.

author
bigfootduck made it!(author)2008-06-11

I have everything but the bike valve. Where do you get it? do you have to drill a hole in the pvc and glue the valve to it?

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Dr.+Explosion made it!(author)2008-06-17

get at auto parts store like Auto Zone or somthin

author
knexman123 made it!(author)2008-04-30

i'am making one i used a compresser to charge the bottle i got 150 psi

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