A really loud, flat whistle that you can comfortably carry in your wallet.

About the Whistle:

With a thickness of only 3 mm, the flat whistle fits in any wallet. Despite its flat design, it's really loud. It is also possible to wear the whistle as a chain or attach it to a keychain.

Sound:

It has a clear double tone. Due to the size, the sound is quite high. But it is enough to get attention. 

Dimensions:

43 x 22 x 3 mm 

(additional variants 43 x 22 x 4 mm - 43 x 22 x 5 mm - 39 x 11.5 x 3 mm)

How to Print:

I recommend using a nozzle size of 0.4 mm and a layer height of 0.2 mm. Don't use supports. It's very important that the first layer is perfect, because the wall thickness at the top and bottom is only 0.6 mm. If your printer is well leveled, however, there should be no problems.

Troubleshooting:

If your whistle doesn't work properly or you have problems printing a smooth top surface, make sure the layer height is set to 0.2 mm. This ensures that the bottom and top surfaces are printed at the correct thickness. You can also experiment with the perimeter value if there are problems with bridging. Any value between 2 - 3 is recommended. And last but not least, the solid top/bottom layer should be set to at minimum 5 each.

Print time:

~ 10 - 20 min (depending on your settings)

Happy whistling!