Pocket Siren
Description
Have Access To A Laser Cutter? Want To Be Really Annoying? Then You Need To Make A Turbine Whistle! I Designed It To Work On The Same Principles As An Air-Raid Siren, So You Can Imagine The Noise... ;-) The Construction Instructions Are At The Link Below, And Don'T Forget To Check The Comments For A Cool Remix. Http://Www.Instructables.Com/Id/Turbine-Whistle/
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