This whistle is printed in place with little to no post processing required. It can reach up to 115db (V4) at a distance of 150cm (59 inches), perfect for sports or camping.
Recommended Settings:
Material: PETG
Layer Height: 0.15mm
Infill: Gyroid, 15%
Scale: 100%
Print with the V4 / V5 logo on the bed for best results
V4: Old version - Difficult to blow
V5: New version - Much easier to blow and louder
The author hasn't provided the model origin yet.