Hey Dean, The angled pieces are just setting there so they don't get lost. It is the short piece that came off the front piece. I used part of it and cut another to make the two pieces that form the chamber where the air will enter the whistle. Here is another B&W of the ends sanded down flush. I have about 8 this far now.
The last ten I'm going to let my wife glue. She has smaller fingers
And can handle them better.
There will be a couple of front cover pieces that will make the whistle work. Then there is a stopper that you can slide up an down to adjust the note.
I need to get some brass tubing. I'm going to rework how the tubes fasten to the pipes.