
Customizable Self-Starting Siphon
thingiverse
A customizable parametric version of the self-starting siphon that you can tweak to find the optimal size/parameters. Attached stl file is just an example with a pentagonal tubing. Suggest printing with 100% infill for water-tightness, and with clear filament. No support required unless you bump up the facet count above 9. To use, drop it into a glass of water that's filled to the brim (the glass must be deep enough that the inside loop is submerged). I'm listing dougfeig's design as the source since it's where I got the idea and it contains some useful links for more info, but I wrote this version from scratch in OpenSCAD. (Updated 9/29/20 to add configurable bend angles and a better example)
With this file you will be able to print Customizable Self-Starting Siphon with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Customizable Self-Starting Siphon.