I tried to make a whistle to work with this blower thing:
https://www.thingiverse.com/thing:209797
But it didn't have enough strength to work.
So I had the stupid idea of trying to use it with the blowing side of my vacuum cleaner.
The result was a deafening whistle!!
Try at your own risk!
BlowerWhistle.stl | 7.8MB |