Personally, I'm super excited about the possibility of ultrasonic consolidation hybrid printers: http://reprap.org/wiki/Ultrasonic_consolidation_Hybrid_printer

Personally, I'm super excited about the possibility of ultrasonic consolidation hybrid printers: http://reprap.org/wiki/Ultrasonic_consolidation_Hybrid_printer http://reprap.org/wiki/Ultrasonic_consolidation_Hybrid_print... As a hybrid approach, it wouldn't be quite as flexible as full 3D printing, but still, it's pretty cool!