Shepherd's whistle

thingiverse

Update (Dec 19, 2014): Two new versions are available. They allow you to thread some twine through them!http://www.thingiverse.com/thing:601653http://www.thingiverse.com/thing:601656 A whistle commonly used by Shepherd's for giving commands to dogs. These things require a bit of practice to use, but can be very loud and fun once you get the hang of them. Check instructions for further information on how to play it. *Only use the whistle if you're using non-toxic materialsUpdate June 26, 2014: Louder and easier to play whistle has been uploaded I've also added a drawing to better explain how to use the whistle. *Update September 18, 2014: Uploaded gcode of improved whistle because current version of Repetier and Slic3r aren't working as well for it. Instructions How to use Shepherd's whistle: With the back of your tongue placed on the flat surface of the whistle, blow gently. Your tongue is directing the airflow to the top of the whistle and through the hole (you want to make sure your tongue prevents any air from getting under the whistle) A pocket of air forms under the whistle and as the air pressure increases, it forces itself back out the hole. Air escapes through the slit that divides the top and bottom and whistles. You can change the whistle's tone and pitch by making different formations with your mouth and blowing louder or softer. Here's a video of a guy who is very talented at playing this type of whistle: https://www.youtube.com/watch?v=Mv66viUCn1Y