Guard your stuff with this cheap, high-powered homemade air gun
DISCLAIMER: MAKE NO MISTAKE, THIS IS A WEAPON. DO NOT SHOOT AT ANYTHING FRAGIAL OR ANYONE. IF ANY PROBLEM OR DESTRUCTION IS CAUSED BY THIS, I CLAIM NO RESPONSIBILITY.
Step 1: Materials
What you will need:
-Approximately 1.25 meters (4 feet) of 1/2 inch PVC pipe - you probably won't need that much but keep it just in case you mess up on a step.
-A 591 mL soft-drink bottle like what you normally drink coke out of
-A small sports pump
-PVC fittings (all 1/2 inch): 1 ball valve, 1 "T" shaped fitting and 3 elbows
-Hack saw and serrated steak knife
-Hot glue gun
-PVC bonding glue (optional)
I got all my PVC and fittings from a lumber store, not a hardware store. They only sell in 10 foot lengths so it cost me around 7 dollars (Canadian).