Comment by zaphar
He specifically set a constraint for now curved surfaces. Using cylindrical and conical surfaces would have violated that constraint.
He specifically set a constraint for now curved surfaces. Using cylindrical and conical surfaces would have violated that constraint.
But that's an arbitrary constraint choice that didn't need to be there. It's not inherent to the medium. He has a justification for it (curves are "flimsy and introduce variances") but that is easy to get around with perpendicular reinforcing pieces inside that constrain the curve.