The EZ-Launch bottle rocket launcher has an internal spring loaded release mechanism. that allows the user to lock the 2 liter bottle in place during the fill up phase and release the bottle with ...

The power of the sun is harnessed using a bottle full of water. Quite simply they’re used 2-liter soda bottles. They’ve been filled with water along with two caps worth of bleach to keep ...

Then cut the top off the 2 litre drinks bottle, making sure that the remaining bottom section is a bit taller than the bottoms of the two 1 litre containers you cut in the step above. If you have ...