Recently built a potato gun. I fucked with it for a bit and it

Make APFSDS for it.

>>28320228
Make a mount for it a jerry rig mortars for it. I recommend a remote trigger unless your a fan of shrapnel in you.

>>28320672
A carrot in the middle...?

File: spudgun300x300(2).jpg (13KB, 460x460px)

13KB, 460x460px

>>28320228

File: tmp_29573-P1010198-177936427.jpg (23KB, 480x360px)

23KB, 480x360px

>>28320228
Personally I like pneumatic cannons better. But if you're using combustion I recommend using a stun gun as an ignition system and wiring it up for a multi spark ignition system improves combustion.

>>28320672
APFSDP
Armor piercing fin stabilized discarding potato

>>28320930
Also using butane or propane as fuel makes a hell of a difference, and their clean compared to bull shit like hair spray,but you better know what you're doing or you're going to have a pipe bomb instead of a cannon.

File: 1450398467929.jpg (183KB, 636x681px) Image search: [Google]

183KB, 636x681px

>>28320806
Shit i still think i have one at my parent's house. I miss plinking at living things for cheap.

>>28321019
They were pretty fun.

>>28320228
Also a pro tip I got is to make it as easily manageable and storable as you can. It may be tempting to build a big ass gun but you'll enjoy a smaller one better. I recommend keeping it under 1.5 meters long. Any more and it gets difficult to store and get around or transport.

File: tmp_29573-15barrel-569870851.gif (2KB, 638x191px) Image search: [Google]

2KB, 638x191px

>>28320228
aslo making the barrel interchangeable with a treaded male adapter at the front of the combustion chamber and a thread female on the base of the barrel allows you to have different size barrels without having to build multiple cannons. It also helps with storage and cleaning out your gun if you shoot nasty shit out of it.

File: image.jpg (487KB, 1536x2048px) Image search: [Google]

487KB, 1536x2048px

>>28320228
Breechloading spud chucker from last thread. Not the guy who made it, I just appreciate the design

Note how the barrel is like a recoilless rifle, and the chamber fits around it.

>>28320672
Armor piercing fin stabilizing discarding spud.
Done.

>>28320228
Put a end cap on the tip of the barrel and then blow yourself up faggot.

>>28321534
more

I remember having one that I made explode in the hands of a friend. The thickness of the combustion chamber was too thin and we packed the barrel hard with an apple. The pressure was so much and had no where to go but through the wall. Shit was deafening. Also make sure you know what you're doing when putting one together.

Pneumatic launchers are the way to go. Unless you have a precise way of measuring how much propellant you're injecting, using pneumatics gives consistent performance.

On hot summer days I like to put dry ice and water in the chamber of my pneumatic launcher and watch the gauge. Once it hits 100psi, baby just sit back and enjoy the show ;)

I've always wanted to build a hybrid launcher but never really put my mind to it.

>>28321967
That's all I saved ;^)

File down the edges of your muzzle so it peels the potato when you load it.

Wrap potato in tinfoil for better armor penetration.

Use silicone spray instead of hairspray for better ballistics

>>28320228
I made a steel .75 cal pneumatic when I was a youngster, it worked fuckin' awesome until the cheap ball valve trigger snapped in half.

File: 20130926_122039.jpg (3MB, 3264x2448px) Image search: [Google]

3MB, 3264x2448px

Need a new ignition. What works best?

File: bamboo cannon.jpg (34KB, 400x266px)

34KB, 400x266px

Fuck yo potato gun

>>28323550
https://www.youtube.com/watch?v=PFiDyaaXSLU

skip to 0:28

https://www.youtube.com/watch?v=pKVkRsoSSg4

File: bzzzt.jpg (34KB, 460x345px) Image search: [Google]

34KB, 460x345px

>>28323544
Checked
ATF please go.

BBQ grill igniter are the go to favorite, can pick them up where you buy your PVC. I usually get one of those, and a couple longer stainless steel screws to drill into the ignition chamber like pic related. Unless you have a gun show in town....
>BZZZZZZZZZTTTTT

File: cylinderDart.jpg (161KB, 505x1925px) Image search: [Google]

161KB, 505x1925px

>>28320228
1) Every plastic piece is available in steel.
2) with a solenoid valve you can pressurise your fuel with air. One switch will open the valve and spark the gas at the same time.
3) spray foam and a chunk of barrel makes a good sabot mold.
4) greasing the barrel helps a whole lot.
5) picrelated