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Make sure both caps are screwed on tightly. Your rocket is now almost complete! To finish it off, screw the cap onto the open end of the nose cone and then screw on the cap of the other body tube (this will be where you insert the bicycle pump). Then tape these fins onto the body tube so that they are evenly spaced around it. Fold each rectangle in half lengthwise and tape them together at the crease. Now it’s time to add fins to your rocket.Ĭut four equal-sized rectangles out of cardboard or stiff paper. Tape the nose cone to one end of one of the body tubes. These will be the body tubes of your rocket. Next, take the other soda bottle and cut it in half lengthwise. This will be the nose cone of your rocket. To start, cut the bottom off of one of the soda bottles. Once you have all of your materials, you can start building your rocket! You’ll need two liter soda bottles, duct tape, scissors, a bicycle pump, and some sort of launch pad or stand. If you want to make a homemade water bottle rocket, there are a few things you’ll need to gather first. How Do You Make a Homemade Water Bottle Rocket?

Release your thumb from The notch and watch The Water Bottle take flight!.

Use your other hand to cock back on The base of The Bottle until it’s tight against your thumb.

Place your thumb over the notch and hold the launcher horizontally with the nozzle pointing away from you.

Cut a small notch in the side of the water bottle near the top.

Tape the balloon to the water bottle securely.

Stretch the neck of the balloon over the opening of the water bottle.

Cut a small hole in the bottom of the water bottle.

Gather your supplies: a water bottle, a balloon, duct tape, and scissors.

Load your water bottle into the launcher and take aim! Commonly used launching mechanisms include rubber bands, compressed air, or CO2 cartridges.ĥ. Attach your launching mechanism to the hole in the PVC pipe. The size of the hole will depend on what type of launching mechanism you are using (see below).Ĥ. Drill a hole in one end of the PVC pipe for your launching mechanism.

Make sure that the connection is secure so that there are no leaks.ģ. Connect the two pieces of PVC pipe together with a coupling or elbow joint.

The length will depend on how far you want to be able to launch the water bottles.Ģ. Cut two pieces of PVC pipe to the desired length for your launcher. Once you have everything you need, follow these steps:ġ. To make a water bottle launcher, you will need some basic materials and tools. There are many different designs for water bottle launchers, but they all work in essentially the same way. A water bottle launcher is a simple device that can be used to launch water bottles into the air.