1) First, connect the 3D printer to the source and warm up the extruder to operating temperature. The extruder heating temperature should be the same as the printing temperature for the specific plastic.
2) Hold the lever of the pressure mechanism and slide the thread forward towards the nozzle until the plastic starts to come out of the nozzle.
3) And take the plastic rod out of the extruder with a sharp upward motion in the opposite direction.
4) Now you can start loading the new filament.


After installing the new plastic coil for 3D printing, I recommend to print a test model to normalize the filament feed.