You have built potato guns in the past but want to downsize the budget while still being able to have fun. Building a mini spud gun will give you a large amount of fun at a fraction of the price.

The mini spud gun is much like your standard size but with the added benefit of easily being transported. Your mini spud gun may have either a compressed air propellant from a CO2 cartridge which is awesome. Your mini spud gun can also use either propane or aerosol spray. You will need a strap to hold your mini spud gun on your shoulder not just for convenience but to help you find the sweet spot when you are aiming.

Before going out in public with your mini spud gun check with your local authorities to make sure it is allowable. Some cities have laws prohibiting any type of projectile firing weapons like the mini spud gun especially if it is armed with a CO2 cartridge which is the same thing use in paint guns.

If you do not have a mini spud gun yet you can build one very easily. The first thing you are going to need is a section of PVC piping that is a minimum of 3 feet long. The challenge with using a short piece of piping is it will not give the mini spud gun projectile enough distance to acquire the speed and accuracy necessary. You will need to make one of end of the cannon closed with a small opening for you to put your propellant in. Most mini spud gun like to use propane and aerosol spray since it gives them a greater range of options to test the limits of their mini spud gun.

Once you have the barrel of your mini spud gun established you will need to attach a strap to make carrying it easier. Since you will be using a flammable fuel there will be a need to ignite it somehow. You do not want to use a lighter for your mini spud gun it presents to many risks for injury so making an ignition system with a spark plug is your best option. You will need a length of wiring and a battery to power the spark plug. Before you attach the ignition system to your mini spud gun test it first to make sure it does work.

Now that the ignition system is on your mini spud gun you can go out and take it for a “test drive”. Make sure you go outside and do not aim the mini spud gun at anyone. After the first shot you can add or reduce the fuel mixture to get the optimum results.