Firecracker Acoustic Horn
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This is a horn for making small firecrackers sound louder.
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Model information
- Source
- Printables
- Category
- Outdoor & Garden
- License
- Creative Commons — Attribution — Noncommercial
I learned that impedance matching is a thing for sound and thought it could be applied to fireworks. So I made this. Testing was successful, it noticeably increased the sound of firecrackers. It has part of a soda can in the bottom to keep the PLA from melting, but otherwise didn’t need assembly.
I have only tested this on small firecrackers (1/4” diameter, 1 ¼” long) and would not recommend using anything larger, at least not without testing at a distance. As always when fireworks are involved, please take reasonable safety measures. Don’t point this horn at nearby people. Just place on the ground, place a string of firecrackers (or a single firecracker) in the bottom, light the fuse, and step away.
Printing and assembly instructions are in the guide document.