Emergency Signaling and Sports Whistle

thingiverse

<h1>Quick Overview</h1> ~120dB 23x55x14 mm (mini) Print Time* 1 hour 23x78x14 mm (Normal) Print Time* 1.30 hour The normal version has a deeper sound (peak at 1565 Hz) The mini version is comparable to a "normal" pea whistle (peak at 2800 Hz) <h1>Inspiration</h1> Inspired by <a href="https://www.thingiverse.com/thing:3130078" title="Emergency & Sports Whistle by Mechlimere">this whistle</a> i decided to make my own version in a similar style. Through lot´s of testing and around 30 prototypes i am now finally at the point where i am happy to share it. <h1>Characteristics</h1> I set myselfe a few goals i wanted to reach with this design which where all reach in the end <ol> <li>Easy to print without support</li> <li>Little needed pressure(Almost impossible to breath through without sound)</li> <li>Distinct and clear sound(No air hissing through without sound)</li> <li>Durrable</li> <li>Cord hole</li> <li>Around 120dB(Without loosing sound quality)</li> <li>Quick water draining(Shaking it once has to drain it completely)</li> <li>Organic shape and good feeling (No way for it to glide out your mouth without you wanting it)</li> <li>Symmetrical(To prevent having to turn it before using it and make reaction faster)</li> </ol> I hope you have with this creation and feel free to share your own makes and any suggestions you have *At 60mm/s 3 shells and 3 top and bottom layers