That's what one would think would be the better solution. Designing a windmill blade that assembles from three pieces. But apparently they do the giant single p

That's what one would think would be the better solution. Designing a windmill blade that assembles from three pieces. But apparently they do the giant single piece polymer forming because the lower weight means it's less prone to fatigue and keeps the blades from bending under their own weight. The math is just so ridiculous to keep the blades with a weight and shape that lets them spin without breaking.