2010-05-30 Bottle Rocket Launcher

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The neighbors came over to ask about some scrap wood for a planter, and Sage found an inner tube we'd cut up for some project, and that reminded me about the valve. So we launched a water bottle, knocked on the neighbor to apologize for the intrusion and retrieved our bottle, but then we got thinking about launchers, rather than doing it manually.

So Sage and I went into the shop to see what we could come up with. He learned how to use a drill press, and a Japanese pull saw, and we ended up with this:

BottleVinegarAndBakingSodaLauncher01.JPG
BottleVinegarAndBakingSodaLauncher02.JPG
BottleVinegarAndBakingSodaLauncher03.JPG
BottleVinegarAndBakingSodaLauncher04.JPG

Yeah, there's an additional piece of wood that probably isn't strictly necessary, but when a third grader tells you "I think we need a piece there", well, who am I to argue?

http://www.youtube.com/watch?v=hVeq6DUzFGg

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