A simple, customizeable flute, designed for easy 3D printing and playability.
The flute begins as a solid cylinder of some height (currently set to the maximum size of our 3D printer), from which sucessive portions are 'bored' out (using the difference() function), such as hollowing the tube, the mouthpiece hole, and the finger holes. Each hole is placed porportionately according to create a (roughly) diatonic tuning.
See the comments in fifel.jscad for details