Gemstone Whistle (optimized for FDM printing)

OpenSCAD sourcecode coming soon.

## Usage

Please note that this is an four tone instrument not a signalling device. Instead of blowing in with full force you should find the correct amount of air for each tone.

## Occasion

Several of these whistles where printed on the
Linuxwochen event (2015 in Vienna Austria)
http://www.linuxwochen.at/wien/

## About the design
This whistle design is based on some accumulated experience.

* The blade is sharper due to the horizontal pri