News:

Please also check out my new Safety Whistle:

Update 2023-02-16:

I have also designed a fancy gift box for this whistle, which you can find here:

Finally a useful gift for Valentine's Day! 

With this fancy dual tone whistle, the neglected partner can call on the 3D printing fan to fulfill their relationship duties. It's tiny but still pretty loud and also doubles as an emergency whistle.

Attach it to a necklace or keychain, or use it as a charm for a gift wrap or backpack.

How to print:

Print with 0.4 mm line width and 0.2 mm layer height, 5 top and 5 bottom layers. No support required, place the Z-seam near the mouthpiece. Print slowly to get sharp edges - this makes for a nicer tone.

If you want a 2 color whistle, change color for the top 3 layers.

Please also have a look …

…  at my compact Emergency Whistle and my new Steam Train Whistle: