It really was a lot of fun and we got three whistles done in a couple of hours. They sound very pretty too. If I can convince Andy to let me record him, I will post it on here. He always says yes but ends up avoiding it-- he's shy about playing in front of people but is very good.
Some Tutorials, Plans and Tips for making CPVC and PVC whistles and other instruments if you'd like to try yourselves:
- Guido Gonzato's Plans for Whistles : This site has lots and lots of plans for building whistles.
- CPVC Flute
- The Bag Whistle: Directions for a weird bagpipe flute instrument.
- Making Simple PVC Flutes