Water Rocket Launcher

This is the best thing to do with a soda bottle since Diet Coke and Mentos.  The insructions are clear, and the cost of materials low.  I know some grandchildren who would love it.  (H/T Conversion Diary.)

Posted by sursumcorda on Friday, May 6, 2011 at 9:33 am | Edit
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"Can we try it, Mommy?"

I like his clever engineering.



Posted by joyful on Friday, May 06, 2011 at 2:54 pm
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