Bottle Blast

Grayson constructed this awesome bottle rocket launcher (actually, he made a set of FIVE of them). He used them for the school's field day for a couple of years, and they are a blast to just pull out for some front yard fun as well. You place a 2-liter bottle with some water in it upside-down on the pole, then pump air into it using a compressor. Pull the trigger and ... it's off! Water sprays everywhere and the kids try to catch the bottle as it returns back to earth. I made a muvee of some bottle rocket fun from a few days ago ...