@shop3d.ca: Jia, our a member of our tech department and printer repairer discusses how a Direct Drive 3D Printer is preferred over a Bowden tube system for printing TPU. He explains that since the extruder distance is closer to hot end melt zone on a direct drive 3D printer it prevents under extrusion and ensures a stable flow rate. Do you have any other TPU printing questions? Let us know in the comments! #3dprinting #3dprint #3dprinter #3dprinterfilament