3mm 3d printing filament extruding machine Advantages as follows: 1 Big capacity compared with other suppliers who use the same model. 2 Lowest tolerances: +/- 0.03 mm. even +/- 0.02 mm. 3 Both 1.75 and 3.00mm filament diameter 4 It can process multi-materials like PLA ABS PET PA HIPS . 5 Easy operations: SIEMENS PLC full-auto controlling system 6 Stable qualities, we have not received any passive talks from our customers