Is this 3D model free to download?

Yes, Ultimate Tornado Tube is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by USWaterRockets, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Ultimate Tornado Tube 3D printable model by USWaterRockets

Ultimate Tornado Tube

Source: Thingiverse by USWaterRockets

The Ultimate Tornado Tube is a free printable 3D model from Thingiverse by USWaterRockets. This is our take on the classic "Tornado Tube", used for joining soda bottles together to create huge water rockets. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

2,799 saves Source: Thingiverse Updated 2026-10-14 License: CC-BY-NC-ND · non-commercial 12 makes Category: 3D Printer

Tags: bottle, coupler, tornado, tornado-tube, tornado tube, vortex tube, waterrocket, water rocket, Water Rockets

About this model

This is our take on the classic "Tornado Tube", used for joining soda bottles together to create huge water rockets. A short video about this design can be viewed here: The "tornado tube" name comes from a science toy used to connect bottles together to create a vortex when water moves from one bottle to another. Water rocket builders quickly seized upon the science toy and repurposed it as a water rocket coupler. However, the science toy version is notorious for leaking pressure and also known for choking the flow inside the rocket. Our design uses an external o-ring seal on each end, which we discovered when designing our Gardena water rocket nozzle (you can find it among our other things). This creates an unrestricted flow between bottles for optimum performance. To use this design, you…

Frequently asked questions

Is this 3D model free to download?: Yes. Ultimate Tornado Tube is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by USWaterRockets.
Who made this model?: Designed by USWaterRockets, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.