One Piece Deafening Horn

thingiverse

This extremely loud airhorn is super easy to print and I've found it really useful for waking up friends, or pretending to be a bus on the street. I based its design on an airhorn I saw being sold near Fisherman's Wharf in San Francisco - it's cleverly simple. After you print it, just add a balloon and a rubber band, and you're good to go! You can check out this video: https://youtu.be/XzplgTAGIUg This model was made using OnShape: https://cad.onshape.com/documents/fc84b201b8f848d88d503020 Instructions: 1) Print with 100% infill, no supports. 2) Stretch a piece of rubber over the top and secure it with a rubber band - a balloon or a condom both work well, just trim the excess. 3) Blow through the triangle hole - you may want earplugs!