What You Need to Build a Snow Gun
To build a simple home-grown snow, you will need an air compressor that can deliver at least 4-5 cfm @ 40psi. Your best bet is an electric compressor that is rated for continuous duty and uses oil. The 2HP units are lightweight and work well. You will also need a pneumatic hose from the compressor to your home-grown snow gun that is at least 50 ft. long with appropriate adapters at both ends of the hose (your local hardware store can help you with all the parts). Finally you will need a standard garden hose and about a dozen basic plumbing parts, including teflon pipe-tape for the joints. After building the snow gun, you will need to mount it on a sprinkler tower that you can get at your local home and garden store.
NOTE: There are risks involved in this procedure and you must make yourself aware of them before operating your snow gun. WHDH-TV cannot be held responsible for any injuries, accidents or misuse of this experiment.