I took jzisa's V29 as a reference for the inner chamber. I designed a new shell from scratch aiming for a compact, elegant result. I also added a hole perpendicular to the print layers for increased strength. It accepts a keyring or a cord.
The grip is excellent and it comes with the SOS signal on the bottom side of the whistle.
Bonus: You can use the top side to emboss your own name or logo.
Dimensions:
Printing:
*You can test your printer capabilities with my QuBenchy - 3D Printing Torture Test Cube:
Power:
Feedback is welcome. Cheers!
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Rendered in Blender, using Blender Boom's Desk Scene and @Az3Dip's Ender 3.
The author remixed this model.
Complete redesign of the shell and partial redesign of the interior cavities. Addition of SOS code and hole is now perpendicular to print layers for increased strength.