To calibrate Sidewinder X1, first, you need to level the print bed, adjust and then measure the E-steps, the feed rate, the flow rate, and the acceleration. The X1's extruder steps, or E-steps, specify how many stages the motor of the extruder must take to transfer one millimeter of filament; the X1's E-steps/mm calibration procedure is as follows: 1. Install a terminal or host software like Pronterface.  2. Use a USB cable to plug in the printer to your PC. 3. Launch the Pronterface software and set it up with Baud Rate and COM port.  4. From the nozzle entry point, measure 100mm of filament and mark it. 5. To check the latest E-steps/mm value, enter the M503 command in the Pronterface. 6. Enter M83 and then type in G1 F100 E80. The nozzle would extrude 80 mm millimeter of filament with this command. 7. After finishing, calculate the amount of 80mm filament the printer extruded.  8. Use the following calculation to determine the required E-steps/mm and enter the latest value:  New E-steps/mm value=Requested extrude amount/Measured extrude amount*Current E-steps/mm.  For instance, 80mm(requested)/90mm(measured extrusion)*500(current E-step value)=444.44(new E-steps value)  1. In Pronterface, input M92 Exxx.xx at the starting of G-code and replace xxx.xx with the estimated digit of the latest E-steps/mm value. For example, M92 E444.44. 2. To keep this setting, enter the M500 command.