This was a lot of pain to design. I completely changed the design four times, the version you are getting now is 4.1 (just like the version of Blender I'm using) and if I count all the tries it is the 18th version. All of the previous versions had just a small problem - they didn't whistle.
So I'm very happy to present you this model and I hope you'll enjoy!
Print settings
Remixing
As always, I'll be happy if you remix or improve my design. The blend file is included.
The author marked this model as their own original creation.