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Picture of Simple Water Bottle Rockets
I love making waterbottle rockets but can't be bothered putting in the work to make one with fins and remote releases and all that rubbish,so I have made a rocket that is just as fun but is so simple that my friends 5 year old brother made one.

Step 1: Stuff you need

Picture of Stuff you need
to keep it simple I only use 3 things :
compresser
drill
bottle

5 if you count water and air