MarkForged can also take a significant share in aerospace applications.
They build printers that can interlace continuous strand composites - fiberglass, CF, kevlar aramid - into plastic 3D printed parts, for lightweight, cost-effective, stiff and strong parts. These will find a way into aerospace since with a 3D printer you can make geometries exactly fit to the application while minimizing hand labor costs. It would be perfect for wings as by varying the shape and ratio of plastic vs. composite you can adjust more mechanical properties than ever before.