Step 1: Order a BMG Dual Driver Extruder
If you want to save up a few bucks, order a BMG without motor, you can use the stock one.
Step 9: Marlin FW modification
BMG is a geared extruder with a ratio of 3:1.
Stock extruder has a 1:1 gear ratio.
This means that you will need 3x more steps to extrude the same amount of filament as with the stock extruder.
Read the actual step values:
You can send M501 command to restore and view settings.
Calculate the new value: steps * 3 = new steps
Use this M92 command to set the new step value: CLICK HERE
After extruder calibration you should calibrate material flow.It is possible that without flow calibration you printer will be over extruding and your print quality will be bad.You can easily modify it in your slicer, such as Cura. 1. Download cube