A dual ended key chain whistle with audible and inaudible tones. The silent whistle sits at just under 19khz (see picture) and should be inaudible to most humans, while the other end aims to achieve the opposite purpose and is great for raising alarm, or just getting your dogs attention from even further away!

Printed on A1 Mini and 0.4 Nozzle using the 0.2mm Standard profile with:

• 0.2 layer height
• 0.42 outer wall
• 0.45 inner wall
• Gyroid 15% infill

Everything else on the 0.2mm profile was left standard.

Tested with:

Bambu Basic PETG Black/White

Bambu PLA Matte Dark Red

Bambu PLA Matte Lemon Yellow

Sunlu PLA+ Sunny Orange.

Please check your settings and slicer before printing. Thicker walls/bigger nozzles will result in blocked air channels.

Ensure seams are kept away from inner air chambers as pictured above, painting on the mouthpiece opening, inside the keychain hole and on one of the sharpest outer corners will fix this.

Printed version and other crafts available on Etsy.