Kazoo
This is a kazoo I made in Inventor. You hum into the small end and it will project the sound out the others. At the top there is a thin membrane that will help project the sound. This is 100% 3D printable.
This is a kazoo I made in Inventor. You hum into the small end and it will project the sound out the others. At the top there is a thin membrane that will help project the sound. This is 100% 3D printable.