Lower part of a flue/labial organ pipe, use a tube to make it long.
It is customizable, the parametric FreeCAD file is on GitHub https://github.com/benjaminwand/3d-printed-labial-pipe
and there is an instruction video how to use those files: https://youtu.be/g_tp1z9HByQ
Notes:
Print on a 45° angle with 'support touching build plate'.
Category: MusicThe author marked this model as their own original creation. Imported from Thingiverse.