What's the reason of assembling a neck (-through body) [and a body] with more than one kind of wood. Is the 3 or five pices of wood lamination useful or just smartlooking? I know that to enforce the neck it's possible to fit in one or more graphite bar. Do the other kinds of wood assembled in the neck provide the same result? P.S. I.ve tried to find the answer with Search function, but... sorry: didn't manage .