Shortcut to the instructions.

You can make this loud version of the classic even if you don't have a cork.

There is a lot of great science in a popgun. A person building and using on has to grapple with atmospheric pressure and sonic compression waves.

This variation from Paul Fontaine: Hi Slater    Thanks for the pop gun plans.  I have made a couple of adjustments.  I bought a pvc 1/2 tee and attached it to the pipe.  It makes it a little easier for the kids to use.  I also cut out some handle grips and drilled a couple of holes(5/8') to hold the ammo.   I also found that a 5/8" dowel seemed to provide a better seal.  I glued and used some brads to secure it to the grip.  I also was able to make some corks by using a dremel tool and reduce the synthetic corks to the proper dimension.   Again thanks for the plans. From Charles Marshall: As you can see from the pics, we finished the gun. Just great, and it's so satisfying to have instructions that actually work: it makes a loud bang, and the cork, when not attached, travels a good 50 feet.
Now for the simple water rocket .....


Here is a finished popgun that Jeff Kamon made from the instructions. He says that his son enjoys the popgun.

Popguns are loud and fun. I have made the assumption that a person who can build this popgun is smart enough to know that you don't shoot at people.


For illustrated instructions for making a popgun click here or the picture.


For explanations, activities and cool links related to popguns and air pressure click here or on the picture.


Back to the science toymaker home page.

I'd like to know how this project goes for you. I'm happy to answer questions about it. Feedback from you is an important way for me to know what works and what needs clarification.
contact me