http://www.youtube.com/watch?v=pt0pDvs9Uk8 In this video I make a whistle using a wooden mallet. It’s a fun variation on a popular toy, which you can keep around the workshop or site, and surprising people with its absurdity. I had to increase the angle of the labium at one point, which I did with a saw off camera. And it goes without saying, you should test your pieces before you glue it all together.