Made the end of a few simple PVC fittings and also lengths of pipe, potato cannons can launch spuds approximately 300 yards. Lock cheap and fun come make, and also they’re likewise a good way to get introduced to the basics the cutting, priming, and gluing PVC together. If you’ve been hesitant about DIY plumbing, making a potato cannon is a pretty low-risk intro course.

A potato cannon/launcher/gun is composed of a burning chamber and also a barrel. The barrel is made the end of 2” PVC pipe and also the combustion chamber is made out of 4” PVC pipe. The pieces room joined in addition to an adapter. As soon as you fill the combustion chamber v fuel, prefer hairspray, and trigger it v a spark, it will certainly combust and send whatever’s in her barrel flying into the stratosphere.

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You only need a few simple devices to gain started. Here’s how to execute it.

Note: while “spud guns” no federally regulated, and are legit in nearly every state, a couple of states/municipalities do have restrictions top top them; so prior to making/using, inspect to view if yours does.

Supplies/Tools Needed

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4” PVC pipe – 1.5 feet2” PVC pipeline – 4 feet4” PVC threaded coupler4” PVC cleanout cap4” to 2” PVC adapterPVC primerPVC cementSawDrill through 1/2” drill bitPotatoesTape measure Stick lighterHairspray (not pictured) 

How to make a Potato Cannon

Step 1: reduced PVC come length.

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Cut her 4” PVC pipeline to 18” inch (foot and a half) in length, and your 2” PVC pipe to four feet. Take treatment to ensure your cuts room clean and square so that the fittings will seat flush to the end of the pipe. If you have lots of extra frayed bits of PVC after your cut, usage some sandpaper to smooth them out. Friend can likewise often acquire your tube pre-cut in ~ hardware stores.

Step 2: glue adapter top top one finish of her 4” PVC pipe.

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To glue PVC together, begin by priming both pieces v PVC inside wall (purple in the photos), let that dry for 10 seconds, and also then use PVC cement. When both components are primed and glued, push them together, offer them a quarter turn, and hold for 30 seconds until set.

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Step 3: Repeat the gluing procedure with your other connections.

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Attach the 4” threaded coupler top top the other finish of her 4” pipe, and also attach her 2” PVC pipe to the adapter to finish your barrel.

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Step 4: Screw ~ above the 4” cleanout cap to the end of your burning chamber.

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Step 5: usage a ½” drill little bit to develop a hole in your burning chamber.


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The placement of the hole doesn’t really matter. Somewhere in the middle third or therefore of the chamber works simply fine.


How to Launch It

Step 1: Jam a potato right into the barrel that the cannon.

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Use a broomstick or smaller diameter item of PVC come jam it down into the barrel, favor a muzzleloader. You execute want the potato come fit reasonably tightly; if loose, that will probably still launch, just with far less gusto. 

Step 2: Unscrew cap and fill combustion chamber with hairspray.

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A spray of about 5-7 secs is plenty. 

Step 3: quickly replace the burning chamber cap to organize in the hairspray.

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Step 4: Aim, pole lighter into ignition hole, and also light.