Is this 3D model free to download?

Yes, Self-Starting Siphon 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 dougfeig, 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.

Self-Starting Siphon 3D printable model by dougfeig

Self-Starting Siphon

Source: Thingiverse by dougfeig

The Self-Starting Siphon is a free printable 3D model from Thingiverse by dougfeig. This is a self-starting siphon. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

1,016 saves Source: Thingiverse Updated 2026-10-16 License: CC-BY · commercial OK 3 makes Category: Education & Science

Tags: Self-Starting, Siphon

About this model

This is a self-starting siphon. Submerge it in your friend's drink, and in about a second it will automatically start spilling out the other end. Unlike a normal siphon, you don't need to suck on the end or prime it with water first. This thing is magic. When showing it to people I've found the more physics they've studied the more surprised they are! Flinn Scientific suggests capillary action is required for the fluid level to rise higher than the container level in the "up hill" part. The capillary action is helpful, but I think momentum alone is enough for the phenomenon. What do you think? See it in action: More thorough explanation of how it works: Based on the design suggested by FlinnScientific here (took some trial and error): OnShape CAD model: Tips: Submerge the siphon quickly, e…

Frequently asked questions

Is this 3D model free to download?: Yes. Self-Starting Siphon 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 dougfeig.
Who made this model?: Designed by dougfeig, 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.