Making a Bansuri Part 3

[psoni6]

Thanks for posting these videos !

[yohrdzayr]

hey, these are amazing videos on bamboo flute making, they really are, but... some crucial informations are surprisingly missing here!!!

what exactly does he means by "effective length"?

how to calculate the ratios to define the holes positions?

[granmaxwe]

grreat. but how do i calculate the ratio of the holes??