Multi Tone Whistle

Summary

This is an openscad script that can generate a whistle with an arbitrary number of notes.
It isn't quite tuned right. There is a function in it to automatically calculate the length based on the note but it seems to be off by a bit.
It whistles though!

Instructions

You can print the two note version in the STL that I have uploaded or you can generate a different whistle by editing the scad file.

There is an array called "notes" that contains a list of of notes. They are specified as the number of half steps from middle C.
Once that array is set up, you specify how many notes there are in the array in num_notes.

You can also adjust the parameters of the whistle shape by editing the constants at the top of the file.