An Approach to 'Fine Tuning' a Wood Didgeridoo

This video is about how the wall thickness can affect the sound of a didgeridoo in relation to the balance of sound in its overall construction.
Some extra notes and links to didge makers below:
There is a great advantage in hollowing the bore first before carving or shaping the outside wood off a didgeridoo. It enables you to fine tune a didge, which cannot be done if the outside shaping is done first. Fine tuning here has nothing to do with its key but more how the wood resonance sound/feel changes depending on the thickness of the wood around the bore of the stick.
Jesse Lethbridge: www.jesselethbridge.com/
Tristan O'Meara: • Making a Didgeridoo Wi...
Johannes Schildkamp: didgeridoings.de/main/schildka...

[@DrLightWind]

"Take too much off the top I lose that, what I call that drive feeling of drive it's a bit like I can only describe it really like a flyman on an engine. Where the flywheel continues the the sort of energy, it continues round and it's got the weight of it to continue the sound. And it doesn't just suddenly drop off, if that makes any sense. It's for me in didge making it's the same kind of thing it's got this kind of flyable effect, I can feel the energy in the stick. And it kind of maintains the energy as you're playing whereas if I go too thin I lose it."