Whistle_DolfinF.

PETG ( Support on build plate only (support touching buildplate ).

¤ Pealess whistle.
¤ Length 58,0 mm, Height 25,0 mm, Width 20,0 mm.

Perfect for referees, coaches, outdoor survival, or everyday safety.
Because it is a pealess design, there are no moving parts to jam, freeze, or deteriorate over time.

Recommended Print Settings:

¤ Material: PETG (highly recommended for outdoor durability and impact resistance).
¤ Layer Height: 0.15mm - 0.20mm (smoother internal walls improve airflow and sound quality).
¤ Wall Line Count / Perimeters: 3 or 4 (Crucial! The whistle must be 100% airtight to reach full volume).
¤ Infill: 40% - 100%