Self starting siphon

A remix of self starting siphon by dougfeig.

This version is smaller and easier to print:
- 60° overhangs don't need support
- Triangular section assures a better adhesion on printer's bed
- Wall size optimized for 0.4 nozzle

Have fun!

Here a video: https://youtu.be/rADAGyRsM5E

OnShape object: https://cad.onshape.com/documents/4b9a52920f2cad71aff53d59/w/a38e9f9a5936ab965dfc5223/e/387d3db527b8eb405601e55f