Jeff Gardner: I sure would like to see a cross section veiw of this thing
KraZer: Can anyone tell me how much this would cost? Need it for a 9th grade
Stew Knoles: Oh my! In my younger days I loved making potato guns. This is a much more
complex design but you get an exact firing every time. I used the old can
hairspray or engine starting fluid and a Coleman lantern striker. Pretty
explosive. Yours looks a lot safer to use. Thanks for the plans. Great
bob smith: Have you ever shot a golf ball from that Cannon? Does it have to fit tight?
I made one doesn't push it too far. have a air tank, air blast
ramirezharrier: Man, I wish I was still in eigth grade and had time to do this stuff. I
loved making the mini potato cannons and such. This looks really cool!
john hanrahan: Is it worth using schedule 80 for higher pressure/velocity? Looks like it
works great but hey, if good is good, more is better, right?
Gintoki Azuma: i have a question
Will it put a hole in someone stomach if they get hit ?
Craig Froehle: This looks pretty simple and pretty safe given that there are no
flammables, explosives, or disposable pressure sources...just a bicycle
pump and ammo.
Steve Nottingham: That will give you a nasty bruise. Too funny. You have to much time on your
John Ortiz: What's the maximum psi this cannon can take?
sidgar1: Wouldn't want to get hit by that thing!
Jeff Gardner: Thank you.
Galen Seaton: Just asking but this if my first time making anything like this so pardon
me for not knowing much if anything but I've been looking for parts and I
was wondering where people would recommend to find them since I am having a
hard time. Also I was wondering what kind of reducer he is referring too
for both the threaded and non threaded because I can't find these right now
lazyboy395: u could tie a string to the end and tie the othr end to the pin of, say, a
paintball grenade, and u got an immediate gren. launcher. get ready to run
when shooting though
Mike Stephans: this is interesting,
Brian Mitchell: Gotta build one of these
Patrick Price: why complain about getting your guns taken away when you can make this?
How to Make a Powerful Coaxial Piston Cannon from Hardware Store Parts
Craig Trader: I'm sure that someone here will want to build this.
William Parker: Watched several, quality presentation at a good pace, interesting material,
simply above and beyond what one expects. Thank you.
Epicslayer77: What would happen if I loaded it with about a million paintballs?
Dennis Wilson: +Brady Johnson you have to see this!
mark22732: What kind of PVC is used here? The type for drainage or for venting your
Spyk Arhus: Hi!
Men you're video it's just amazing! But... With subtittle in french? It's
assassinlucas: there are mini bike pumps you could mount onto the cannon and have
constantly connected for quicker loading and less to carry around
sheffieldmvp: while this is a fun and time consuming project the result is unfortunately
a one shot act. Image having to set it on the ground the pump it up 15
times inbetween shots is impractical. Better hope you hit the target on the
first shot if you ever need it for self defense.
Tom Pottorff: Wow, No one mentions portable air tank for recharging?
MineVenturers: Can this be converted into a rocket cannon
Chris Gebben: Ok on 6:51
I just found out my piston push in end is not flat how do i sand it to
flatten it 100% (ish)?
AirsoftVT: I know that I need to sit down and just think it through but will this
design leak air out the barrel if left 'charged' for an extended period of
time? I need a design that could be ready to fire through the course of a
day at least.
Will Spears: I'm currently planning a hybrid between this and the sniper/shotgun video.
It will be a sniper but have this coaxial design. Only problem is, I need a
quickrelease mechanism rather than the ball valve so I can fire it
accurately. the ball valve would just add too much movement. do you have
any ideas? if not i will make a spring powered one similar to the one used
on the sniper
Mathieu Lapointe: What's the use of the piston? I don't understand.
kufitop: Followed almost exactly (couldn't find tee caps locally so I tried to
fabricate my own piston as best I could), but is leaking directly into
Having trouble screwing interior barrel into outer barrel all the way.
Piston isn't tight enough (although I had to ram it into the barrel...)
Bob R: I just spent hours completing this cannon. I followed all the directions
and specs as best I could. I have run into a huge problem..... Connected my
bike pump, pumped it up like 8 times.... Turned the valve.....
And all the air fired from the back of the valve?????
Total opposite direction????
Now, this was all done with an empty chamber.
Does it matter if I load the chamber???
I guess I will go get some potatoes...
mike evans: How far will this gun shoot??
tom thumb: how many rounds before the barrel overheats ???
Kathy Freeland: Wow, why make something more complicated than it is in reality?
Potato guns are suppose to be cheap, fun, and fail proof. Either way, the
pipe is only rated at 40 PSI, so why make a piston? Just load a piece of
pipe up with air and shoot it.
But that's my philosophy.
Goldie Neko: would this work if you put confetti in it instead of potato?
Derya Uhri: please Show how to meka this
Waleed Elmansour: It's strong
SkintSNIPER262: Is it possible to use sand a dirt for this canon?
Santiago Trestini: Is it possible to have an air tank to maintain the pressure instead of
having to pump it for every use?
Dominic Iacopelli: That's really cool!
Carl Davidson: My grandson made it in two hours. Copied this plan... Awesome!
jeff woods: put a grenade in it
Josh Repavich: Do u think this is more powerful than your vacuum cannon? I'm not sure
which method to use to launch projectiles... I want the most powerful, as
well as cost effective
Stanley Denning: Best design I have seen yet.
Rush Yahr: would this work with a tennis ball in a mortar tube configuration? I bet my
dog would like that.
Luigi66Mr .: potato gun? I could prob launch more than that
How to Make a Powerful Coaxial Piston Cannon from Hardware Store Parts4.9
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