Gern,,, fantastic!!! I wish my 10th attempt would have turned out as well as yours.
Ive never seen a flute made w/ the bandsaw cut & a flat bore , but it works.
The fourth hole , if you can get used to it. Instead of having mode 1 or
mode 4 ,,, you can have m1 & m4 available to youjust by anchoring either your index on 3 rt hd. or ring f. on 4 left hand. and changing anchors to go between modes.
the uses of both in the same improv. are mostly just tension creaters, but can be used . In a way m4 sounds more "NA Indian " to me. like im dancing around the tepee
you did a great job.
Im sorry I cant make a drawing for you, my comp. skills are extremely limited.
beautiful work , and good playing too.
I usually leave the overblows , mostly for a effect , rather than trying to play them,, for me they are too high compared w/ the reat of the tones.
try making , wolf howls,, and bird calls, mourning dove sounds , these are fun & you can incorporate them into your playing.