One of the best stoner toys EVER!

Well, there's a few methods to make one, but I think I have the most basic design (except for the spark plug). If theres bad instructions,

What you'll need is :

ALL PIPE MATERIALS ARE ABS NOT PVC, AS PVC IS WEAK!

1. One of those 3" screwer drain cleany thingys
2. A 3" to 3" coupler
3. A 3" to 1 1/2" adapter
4. 2 feet of 3" pipe
5. 5 feet of 1 1/2" pipe
6. ABS Glue
7. 1 Automotive Spark Plug (Mine is AC Delco, cuz it was cheap and works)
8. A Huge sack of TATERS!
9. One Vernier Caliper
10. A barbeque clicker thingy

OKAY I'll try to make this as easy to interpret as possible. First, cut the 3" pipe to maybe 1 1/2 feet. That will allow for a large chamber. You COULD have 1 foot, but I like to do everything overkill. Drill a hole in the side of the chamber just big enough that you can screw the spark plug into it. Screwing the spark plug in WILL be a bitch unless you have a tapping set, so be patient and make sure it goes in at a 90 degree angle. Next, cut the 1 1/2" barrel to the size you want. REMEMBER! The longer the barrel, the more pressure and accuracy. Now, take the ABS glue and glue the screwy drain cleaner thing into one side of the coupler. Take one side of the chamber and glue that into the other side of the coupler. Now, take the 3 to 1 1/2" adapter and glue the 3" side onto the other end of the chamber. Glue the barrel into the end of the adapter.

Now let it sit for 24 hours to dry (or whatever your ABS glue says is good). NOW YOU CAN BLOW SHIT APART MUAHAHAA.

Oh. Wait. Take the barbeque starter and hook up the wire from the bottom of the clicker onto the top of the spark plug, and the one that comes out the side of the clicker onto the side of the spark plug. I used electrical tape, but you could probably solder it. Test it only once because those fuckin clickers wear out in a couple clicks.(in which case you return it as faulty and they give you a new one).

FUEL

I use deodorant body spray, but hairspray would work too. Just remember that hairspray will leave the chamber sticky, whereas body spray will make it smell like an italian. JOKING!

SAFETY AND ALL THAT SHIT

I'm not responsible if you blow your hands off, so don't come crying to me if you do. Don't pack the potato in too tight or you just have a pipe bomb.

IF SHE DON'T WORK

Remember that the Air/fuel mix is VERY picky. It might take a few tries to make it work, and be alert when you DO get it going. I just spray a 1 second burst in and it works fine. DAMN UNDERLINES.

Anyways dont get hurt and have fun.

 

what does this have to do with weed

 

nothing, but my dad has one. He uses hairspray for fuel

 

Okay, this is the best stoner toy ever. That is why I posted it up in here. Also, it's a good thing to do while stoned cuz it seems like it takes a couple seconds to throw together.

Another thing. As I mentioned, hairspray is the shittiest fuel you can use. I DEFINITLY recommend body spray or automotive grade ether (engine starter). Hairspray just turns sticky on the inside of the chamber, and can really gum up the sparking device. Ether and body spray evaporate clean (other than the smell) and therefore are primo fuels. The thing is though, if you use ether, you'd better be REALLY fuckin careful about it because it has incredible explosivity.

 

A potato cannon?

Yeah those aren't bad...

But why do you need a vernier caliper? building one of those hardly requires measurement that precise.

 

yeaa did one ona scinece project with a friend, it was alright we gotta go out in the parkinglostto shoot it off, and being an ass decided to point the shit at the nearest car and it dented the shit out of it( they are fukin hella powerful) and he had to go through the legal system and ended up wit diversion or sum bullsiht like that

 

it was too long to read... so i'll imagine.. it had somethin to do with... potatoes?

 

depends.. i have a friend who likes to make these sorts of things, and if you want it to shoot far, and last a decent life, you gotta be very precise. but most people (most stoners reading these instructions at least lol) just wanna see something shoot out of a cannon and would be pleased by 50 metres, as opposed to 100-200 like a well made cannon can make without being too huge

 

.

 

BECAUSE if you want the spark plug to fit in the hole properly, then you'll need to make it the right size.

 

And yeah, these things can shoot around 300 yards (well, mine did without a strong spark and using only body spray)

 

You can also use the ignitor from a lantern

 

I saw a guide that used the electric starter from one of those grill lighters (little trigger, lights a flame at the end of a long shaft, ya'll know what I'm talking about). If you disect that you can get the parts to make the electricity jump between two screws in the cannon.

 

Ahh be careful with this, people.

 

I used a grill lighter for mine back in the day. All you need is an electrical source, and two exposed wires inside the chamber.
Thing fired like a fucking bazooka, we only were able to estimate the range at 300-500 ft cause it was hard to find where the potatoes went.
Also, you can get a ring that fits between the chamber and the shaft, it's kindof like a rocket then, all the force gets compressed or something.
And you DO NOT WANT TO HAVE ANYTHING ILLEGAL ON YOU WHEN YOU DO THIS!!! i cannot stress this enough, a potato cannon is basically a giant "HEY COPS WERE OVER HERE DOING ILLEGAL SHIT" flare.

 

They're legal in some areas. Just check your laws.