Rally Air Cannon

[Marsh White]

Vortex Cannon! - Bang Goes the Theory Preview - BBC One

We've got to be able to make a scaled down version of one of these.  Power it with Mapp gas and Oxygen canisters from Home Depot...

[rktmanfj]

Why do we need to scale it down?       

If Calvin had shot Franks tent with one of those, it would have ended up over by Tellicafe!

Randy T
Indy

[Sturgis_Bryan]

I say bring it over here and fire a shot down Main St. so I can watch the hardly's fall like domino's !