Not a great plan for the frame due to poor stiffness. 3d printing cowling, adapters etc is a good application of the tech. It looks like these designs are a mix

Not a great plan for the frame due to poor stiffness. 3d printing cowling, adapters etc is a good application of the tech. It looks like these designs are a mix of these plans, ie including some with metal or CF frame components, and 3d-printed plastic cowling.