Build a potato gun
How to build a potato gun Learn how to build a potato gun, or spud shooter, with this tutorial. To follow the steps in this tutorial you need a 3" cleanout (female thread), a 3" to 1.5" reducer, a 3" cleanout cap (male thread) and a 3" wide 12" long ABS Sch 40 pipe. Be careful when using this potato gun and do not point it at anyone.