Tornado in a Bottle Connector for Two 2-Liter Bottles

Design preview. Rendered from the file, not a photo.
This model is not currently offered as a verified ready to buy print.
What it does
- Joins two standard 2-liter bottles so you can build a tornado display
- Shaped as a connector piece for a classic physics demonstration toy
- Simple design lets you focus on the swirling water effect, not setup
- Fun way for kids and curious minds to explore a spinning vortex
- A hands-on science piece for classrooms, homes, or gift giving
Tornadoes in a bottle bring a swirl of wonder to any room. This connector piece joins two standard 2-liter bottles, so you can watch water spin into a vortex shape right before your eyes. It turns a simple science idea into something you can hold and share.
The design fits between two 2-liter bottles, one filled with water and one empty. Once connected, a quick spin sets the water moving in a funnel pattern that mimics a real tornado. It is a favorite for curious kids, teachers, and anyone who loves a good physics demo.
Made as a single connector piece, this item is built for repeat use as a display or teaching tool. Add your own bottles and water to complete the setup, then enjoy watching the swirl form again and again.
7.8k downloads in the maker community. That is interest in the design on the site it came from, not our sales.
What you get
- This design prints as one piece.
- Nothing else to print or buy for this to work.
What it is made of
Designs like this print well in PLA. Compare the materials.
Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.
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Who made this design
Designed by AtomKemp. We did not draw it.
Shared under Creative Commons, credit and share alike. See the original design