A blow pipe is a very simple weapon that can be deadly in the right hands. Traditionally, tribal peoples make blow pipes by hollowing the trunks of very small, slender tree saplings. They make the darts from thorns or leaf ribs because plant materials are light and will fly farther. These people use blow pipes to hunt small birds, snakes and other animals. Blow pipes have also been used as weapons in wars. You can make a simple blow pipe yourself with household items. Keep in mind that this blow pipe should only be used for fun. Do not use your blow pipe to shoot any kind of dart at animals or people. Use it for recreation and target practice only; other uses could result in injury.
Choose a piece of PVC pipe with a 12 to 25 mm (1/2 inch to 1 inch) diameter. Hold it to your mouth to make sure you can fit your lips into the opening and blow easily. Hold the pipe against the inside of your arm, with one end level to the inside of your elbow. Make a mark on the pipe where it touches the tip of your middle finger.
Use the handsaw to cut the pipe straight across where you made the mark. Gently sand the edges of both ends of the pipe so they are slightly rounded. Rough PVC could cut you. For added protection, wrap the end for your mouth with a single layer of electrical tape.
Roll a 15 cm (6 inch) long, 7.5 cm (3 inch) wide piece of paper into a cone, with the 15-cm (6-inch) sides being the length of the cone. Hold the tip of the cone tightly and try to pass the flared end into the blow pipe. It should fit snugly and easily. If it doesn't, reroll the paper appropriately.
Wrap masking tape around the body of your paper dart so it stays together. Push it into the non-mouthpiece end of the blow pipe, aim at a pillow or something else sturdy and blow sharply. The paper dart should fly fast and straight from the pipe.
Do not shoot any sort of projectile at a living thing or breakable object. This blow pipe is purely a toy, not a weapon. Do not use it to harm others.