So after exploring pakkawood (http://www.fibronproducts.com) and dymond wood (http://www.rutply.com/dymond.htm), I was wondering about using these materials to create necks (not just fingerboards). Would a one-piece neck be stable? Would a one-piece neck be prohibitively heavy (even if low density sheets were used)? Would reinforcement rods be necessary? What special considerations would there be in using truss rods with such a strong/stable material?