Blocked nozzle II
II. Pushing the blocked filament
If the nozzle is always blocked, you can try to push the filament through with another piece of filament. Firstly remove the stucked filament as before by heating up and remove the feeder tube from the print head. Heat up the hotend up to 220 C for PLA or adequate temperature for the stucked material. Then use another piece of filament to push it through from the top, in order to force the stucked filament out of the nozzle. Attention, do not push too much as you risk to bend the horizontal rods of your printer.