You can find many tutorial video’s from Youtube about building an overtone flute. For example video by Nicolas Bras.
You can find a lot with key words how to build overtone flute.
Pitkähuilu / overtone flute / willow flute
You can find many tutorial video’s from Youtube about building an overtone flute. For example video by Nicolas Bras.
You can find a lot with key words how to build overtone flute.