Stealth's 3-tone whistle

It's meant to be like a Fox40. They work well, orient them so that the star is facing up. While not as loud as the Fox40 classic, they're still dangerous to hearing, so be careful with these! I recommend 15% infill or so, Enough to be sturdy but still float in water. I might change the tuning of the pipes at some point to make it more audible and less harmonic, at the moment the tones are all a carrier with a perfect 4th and 5th. Sounds nice, but might be less audible than a discordant whistle.

These cost me 8 cents and 45 minutes a pop to produce.