Introduction: How to Make and Use an Air Cannon and a Smoke Ring Launcher

It is a cheap lancher that is great fun and the best part is that there is no need to reload, it's semi-automatic, because your ammo is air!  

The demo on somke rings is here  http://www.youtube.com/watch?v=KadUPdNB74A:

You can, in theory, change the smoke ring shape to a different one by making the hole that shape, but only simple stuff like hearts or triangles.

Sorry about the sound, it was done on a camera. you may need to turn it to max and put in ear phones. And sorry I kept saying "onion rings" - I was hungry, I meant to say "smoke rings".

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