[MrExpert] is here with the build you need – an air raid siren you can print at home. It’s a simple build, which makes it fun and accessible for just about anyone with a 3D printer. Rotational ...

Residents in Cork city centre were jolted awake in the early morning hours after a mystery 'air siren' alarm went off late Wednesday night. The siren started to go off at around 2 am, according to ...

For this project, instead of trying to quiet his blower, he decided to make one as loud as possible in the form of an air raid siren. The basic idea behind [Matthias]’ air raid siren is to make ...

Air-raid siren sounds the warning. Air-raid sirens first sounded the warning in London in September 1939. They became an almost daily part of life in the capital a year later during the height of ...