This website is one that gives step by step instructions on how to build a water bottle rocket. It provides a list of materials for you to take shopping with you. It also provides some launching tips. There are pictures on this website which show you step by step what you have to do. There is a link of a video which shows you step by step of what to do. It starts off with the prices of the pipes you need to buy and shows step by step how to cut the pipes and cut the bottles and such. It also says things about the trigger mechanism and the safety spring. There are links at the bottom of the page which also discuss safety procedures and the relationship between physics and the water bottle rocket.
http://www.sciencetoymaker.org/waterRocket/buildWaterRocketLauncher.htm
Good post and description. Also, you will need to go to edit your post in order to make the link "clickable" Please let me know if you need help doing this.
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