The flute was made by following the Indian Flageolet or Love-Flute plans by Ben Hunt. I came across the plans by searching online for Native American Flute. My iteration is slightly longer by a couple of inches so the flute length is at 22 inches. The overall flute length used in the plans is 20 inches.
The flute will need to be broken up when printing on smaller printers.

I used FreeCAD to create the flute and followed all other measurements found in the plan. So all other dimensions should be accurate. The flute requires a bird to work which I haven't designed yet. Also, I haven't tried printing it yet so not sure how it sounds.