Trying to make flute

I'm Trying to make aluminum pipe flute with calculator. 

http://11wall-west.com/~ph_kosel/flutomat.html
http://www.whistlemaker.com/pages/flutewhistle-calculator.php
Both giving me NaN.

Thisis great http://www.ehow.com/how_7325964_hole-placements-flutes.html
I think this method is only for major scale. Mouth hole placement gives key of flute.
I think I can make same measuring from other mouth hole placements. I don't know how to measure
mouth hole placement for desired keys. I'm not sure how important is pipe length.
I know that longer pipe length makes flute sound lower.

DeathSuperMario (author) 4 years ago
I wanna make something like fife.
My problem is hole sizes too. I look and search again on the site.
Kiteman4 years ago
There are a number of flute and recorder style projects already on the site - if you have a look, some of them have finger-hole measurements.