Cool, I'm putting an Orbiter + Dragon HF on mine via the EVA system from Rat Rig, seems to be a modular outfit that would suit the printer in that video nicely. If I ever get around to doing it!Prusa uses DD. And whenever I get around to building tool changer, all will be direct drive. This printer may actually be converted to DD as well. There is currently a jam in hot end. And I designed the mount to be small and light. To remove the HE is a huge PITA. So I have to redesign it. Might just throw in the Orbiter + Dragon HF. Then for the tool changer buy the new E3D Revo hotends.