Boundary fill to the rescue.
Took the hollow of a recorder, cut it into a dick that I stretched out to fit the full recorder
Prints in a single 15in tall piece. Should scale down fine but no one's asking for smaller so here we are
Update:
New Version has small finger rests to be a bit more like an actual flute, also included the fusion file if anyone wants to play with my recorder on their own time.
The author marked this model as their own original creation.