The model 9 uses hybrid stepper motors on the X and Y axes and standard stepper motors on the extruder and the Z axis. 3D Potter printers use high quality anodized aluminum rails. The unique feature of our printers is the direct extrusion. The advantage of direct extrusion is printing full body clay, or other paste-like materials. All materials used to build our printers are food grade, so get creative. The 9th generation brings a new wireless feature with a full web interface controlled over WiFi. You can now control and upload files to the printer from multiple devices simultaneously. The interface allows you full control over every setting of the machine.