LOGAN - The Logan Library and Craft Lake City DIY combined efforts with children ages 2 years to 16 years at Willow Park on ...

The reason it's half-inch is because that's what's going to fit exactly into a 2-liter bottle. ... so try to keep it as straight as possible with your rocket. The last step is to do your fins.

The other end is connected to an empty 2-liter bottle. This is your basic propulsion source, and simply stomping on the bottle will force enough air through the pipe to launch the rocket.

Cindy Huynh, 12, of Westminster adds the fins on her two-liter plastic bottle rocket during the 2017 Rocket Launch Blast off at Discovery Cube?s annual Rocket Launch at the Boeing Company Campus ...

All systems were “go” as junior rocket builders crowded around the launch pad on the playground at Orchards Elementary School on Friday morning. “Five, four, three, two, one!” Ephraim Camp ...