Pocket Siren

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/