Please also check out my latest design, a Long Range Dog Whistle at 7,000 Hz. Please download here.

I have also developed real Ultrasonic dog whistles at 20,000 Hz and above, which you can find here.

WARNING:
This is a dog whistle and not a toy! It's very loud which can harm the ears, so please protect your ears and don't use it near other people or animals!

This dog whistle produces a very loud tone of about 13 kHz. It may seem quiet to you, but that's because humans (especially in old age) perceive higher sounds less loudly or not at all - unlike many animals! Since you might not hear this high pitched dog whistle at all (depending on your age), use a freqency measuring app for testing. I use this android app.

How to print:

Use a line width of 0.4 mm and a layer height of 0.2 mm, 6 top layers and 6 bottom layers.

Print slowly to achieve sharp edges.