July 3, 2026
Description
⚠️ WARNING: EXTREMELY LOUD.
To prevent permanent hearing damage, please use proper hearing protection (earplugs) when testing or blowing this whistle.
The flagship powerhouse of my whistle collection. This 40mm tactical whistle relies on precision-tuned dual-frequency chambers to unleash a deafening, 130dB+ roar. It is the ultimate signaling tool for search and rescue, wilderness survival, or any intense outdoor scenario where maximum volume is critical for safety.
Boost MeIf this powerhouse exceeds your expectations, a Boost would mean the world to me! 🚀
Print & Calibration Notes: To achieve maximum resonance and volume, dimensional accuracy is key. Be sure your filament is dialed in perfectly. I recommend using a manually calibrated filament like SUNLU High Speed PLA+ 2.0, printed with a 0.4mm nozzle, 0.4mm line width, and a 0.1mm layer height.
License:
Standard Digital File License
Radu | Design & 3D
