The rotor and frame for the parts are 3D printed, and held together with a ... We’ve seen air raid siren builds before, too – like this sturdy wooden unit.

Faster, easier, and cheaper than the molded techniques of the past, 3D-printed technology allows racing teams to grab a ...

[Yannick], aka [Gigawipf] brings us this (mostly) musical delicacy: a 3D-printed siren that’s driven by ... or even some spare parts, and a 3D printer. Despite the apparent level of difficulty ...