This guitar neckuses Carbon fiber as an exoskeleton with a lightweight wood core, such aswillow or basswood as a compression medium for the core. The finalouter face of the neck is a thin 1/32” veneer of hard wood. Therecan be as much as 200 pounds of pull on a guitar neck.

I've attached my design

Myquestion is do I have the design right? Where can it be improved?

I think stringing it up and leaving it in the sun for a month, probably just goes for pure wood necks.. that way, if it stays straight and does not twist or bend, it is totally stable, and will outlast the rest of the instrument
With Epoxy and CF "casing" it will not warp, but it will be damaged by the UV light from the sun ...  I have an experimental prototype gun-stock with a balsa core and 2 layers of 200gsm CF cover, that has sat in tension holding up a main ceiling cross-beam for over 10 years ... it has not deformed measurably ...   It takes more than 300 kg 's of force to lift the beam even 2 mm ... But it never sees any sunlight ...

"Sapere Aude"... Dare to KNOW!

The written word is the only truly efficient vehicle for transmitting a complex concept from mind to mind...

103% of all people do not understand statistics...

Do not adjust our mind, theres a fault in reality :-)