Safety Whistle

An incredibly compact, loud (100db+) safety whistle to alert others nearby of present or active danger.Print DetailsMaterial: 1.26g / 0.43mTime: 3mSize: 36mm x 11mm x 4mmPrint Settings and TipsMy settings and setup are as follows:Nozzle Size: 0.4mmLayer Height: 0.28mmPerimeters: 2Infill: 0%Supports: NoConsider rotating your bridges so they go the short way across the whistle. Source and Other PlatformsAvailable on OnShape.Available on Printables.Available on Thingiverse. AcknowledgementsWhile I iterated on the internal chambers and overall size, I did so only after studying the Flat Pocket Whistle by Jonas Daehnert and the Micro Bitonal Whistle by AC Studio. If you like my work, consider supporting folks doing great work to protect our neighbors. --------------Updates[ 1/29/2026 ] <stro