Swanee whistle / slide whistle

thingiverse

This is a slide whistle (also known as swanee whistle or piston flute) which one could blow from the mouthpiece, and slide in-and-out the piston to produce different notes. I've uploaded a sample of its sound here:https://soundcloud.com/licheong2/3d-printed-slide-whistle-demo Special thanks for Laurent Muchacho of Smoothz's Hub (http://www.3dhubs.com/london/hubs/smoothz) who has helped to improve the design, test printed it and experimented with different mouthpiece until it finally worked well. Both the main body and the piston are separated into two parts to allow better printing result, because for most printers, a hollow tube cannot support a roof above it without supporting material. Also glue the piston to the little disc, and use it to slide in-and-out to change the pitch of the slide whistle. One may like to wrap the little disc with a piece of felt, cloth or kitchen paper to block the air completely. It also helps to prevent noise when it moves in-and-out. Version 5, last modified 27-8-2015