Things You'll Need
1 (9 inch) PVC pipe (mouth piece)
2 (1/2 inch) PVC elbows
4 5 inch sections of 1/2 inch PVC pipe
2 1/2 inch PVC tees
2 1/2 inch PVC caps
1 8 inch PVC pipe (hopper)
1 11 inch PVC pipe (barrel)
Electrical tape (optional)
How to Make a Marshmallow Gun. This marshmallow gun is simple to make and will have you laughing for hours at its incredible accuracy and range. You can put this gun together in no time, play around, and take it apart again to experiment with longer or shorter pieces. The possibilities of fun in this homemade toy are endless, so let's get started.
Assemble the mouthpiece by connecting the 9-inch pipe to an elbow. Connect the elbow to a 5-inch section of PVC, connecting that to a tee.
Make the hopper by attaching a cap to the 8-inch pipe. Attach a tee to the other end, and finish by attaching a 5 inch section of PVC to the tee.
Construct the handle by attaching 2 5-inch pieces of PVC to an elbow, placing a cap on one piece. The piece without a cap should be stuffed with cotton balls. The capped piece will remain empty to fill with extra ammo, i.e., marshmallows.
Combine all the parts together, attaching the 11-inch PVC section to make the gun barrel.
Use the gun by first loading the hopper with mini marshmallows and reattach the hopper to the gun. Aim towards a safe target and blow through the mouthpiece. When all is functioning well, all of the marshmallows should leave the barrel and the gun should shoot about 20 yards.
Wrap electrical tape around your marshmallow gun as decoration. Adjust the length of the pipes to make you gun bigger or smaller.