Emergency whistles
thingiverse
Emergency whistle in four versions: small one tone and two tone, big one tone and two tone . Sounds loud and clear. It's easy to print and don't need support. It has hole for key ring so you can use it as a keychain. Note: Please download single files because zipped file i corrupted. Print Settings Rafts: No Supports: No Resolution: 0.3mm Infill: 50%
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