materials you will need are:
21 1/2" piece of 1" sch 40 PVC pipe
a coping saw
a unibit and drill
an xacto knife
100 and 220 sand paper
angle measuring device
Here is a link to a video of how it sounds. Keep in mind that I used a picture camera to shoot the video so the one you make will sound richer. http://www.youtube.com/watch?v=OJ90ipNFKE0
P.S. I had to use a link the embeding thingy didn't work for me.
Step 1: Step 1
make a 2 marks about 1 1/8" wide as indicated by the red arrows and 9/16" in as indicated by the black arrow.
Then draw an ellipise connecting them and cut the section out with the saw.
Step 2: Step 2
it with an xacto knife but make sure you don't blunt the edge while doing it.
This part is important, you want the edge that you just made sharp. This is the part that makes it sing.
At this point you can measure the angle but it's not necessary.
this particular one is at 30 degrees.
Step 3: Step 3
your bottom lip comfortably. So the actual shape is not to important other than it should be comfortable.
Once you have removed the flashing and smothed it with sand paper you can try to see if it will make music.
If it doesn't seem to work not to worry! It takes practice learning how to blow into one of these to make it sing.
It took me two weeks! I'm sure you can do it a lot sooner.