Things You'll Need
Instructions
Measure and mark a 6-to-8-inch length of PVC pipe with a pencil, and cut the section with the PVC cutter.
Sand both ends of the cut-off pipe with sandpaper. This will keep objects inserted into the tube from catching on plastic as they exit at high speed.
Place the reed into one end of the PVC pipe, and tape the reed to secure it and hold it in place. This reed will push the object out with more force by concentrating the air from your mouth that flows through it.
Make a handle for the blowgun from the foam rubber tubing. This tubing will fit around the pipe. Cut the tubing between 4 and 6 inches long, depending on the size of your hand. Place the tubing over the pipe, positioning it a couple of inches away from the end where your mouth will be.
Glue a BB a quarter-inch away from the end where objects will be exiting. The BB will serve as a point of focus for aiming, much as a regular rifle has a sight.