After printing something, my filament suddenly broke. I tried to put it back in to continue but it would not grab on, even after following the correct procedures. I looked in from the top using a torch and there is some filament stuck in there - it does not move when retracting or extruding. I have been unable to get it out - any tips?
You can use some of the filement to push the broken piece through
In the manual under first print they describe how to do this.
You will need to heat the extruder to 190 for PLA
Otherwise you will need to raise the Z axis up to about 150mm remove the hot end heat the hot end and gently pull the broken plastic out.
Reassembly and recalibrate the Z axis
[quote=“Wrong Way”]You can use some of the filement to push the broken piece through
In the manual under first print they describe how to do this.
You will need to heat the extruder to 190 for PLA
Otherwise you will need to raise the Z axis up to about 150mm remove the hot end heat the hot end and gently pull the broken plastic out.
Reassembly and recalibrate the Z axis[/quote]
Hi.
Thanks for the response. However, the filament is stuck well and pushing it through is impossible.
Is it possible to provide a photo or example of how to disassemble the nozzle to remove it?
Thanks!
The disassembly instructions are the reverse of the assembly instructions 
Be careful with the temperature sensor on the heater block if you decide to disassemble. Don’t disassemble while hot.
One of the problems is that the curl on the filament means that it is difficult to actually push on the protruding end. My method is to use a thin electrical screwdriver to try to push the filament into the PTFE guide before loading in new filament. I have had to replace the PTFE guide once when I just couldn’t clear it though.
Hi,
I am new here. 
My printer stopped extruding. Filament is stuck somewhere in the PTFE barrel (i can’t pull it out) or further down in the hotend.
I have removed the PTFE barrel, but i cannot pull the filament out that is left in it. What is the right way to clean it? Attached is an image of my barrel. 
This will be difficult to solve.
If you have acces to a bench drill, you could cut the filament and try to drill/remove it.
Order code for spare PTFE barrel: EXT8200FG
Sorry, no direct sales, please turn to a Velleman distributor.
Try this - use pliers or a vice to pull the filament up as much as you can then cut the filament off flush with the top of the barrel. Once the filament sprigs back the cut end should then be a millmeter or so below the top. This is to make it easier to push. Reassemble the hot end and heat it to 190C. Leave it standing for 5 minutes and then try to push the filament through using a small electrical screwdriver. If it doesn’t work then you can try drilling it out but it is difficult to get the drill to remain straight unless you have access to a lathe. Otherwise you will need to buy a new barrel.
I have the same problem. Removed the 2 screws and used pliers to gently pulled the stuck filament out.
Question is: why does it stick. A look at the removed filament shows a bulge in the filament to large to pass through the hole.
Should the filament be backed out of the extruder immediately at the end of the job or left alone?
OR is the feed rate too high that it squashes the heated filament, causing the bulge?
OR is the extruder hole partially clogged causing too much feed and not enough output causing the expansion of the filament?
Regards
Most likely it is clogged, however difficult to say without actually examining/testing.
I don’t remove the filament at the end of a job. But I always remove it back out the way it came in when changing filament. I saw this demonstrated on you tube and it makes a lot of sense. Of course you must heat the nozzle to pull the old out, then immediately insert the new.
If you watch the temperature graph, you can pull out the old filament long before the nozzle gets to the full 190 degrees (for PLA). Then allow it to reach full temperature to insert the new filament.
Art
Hi Blemone,
after the printer has cooled down, you might find that the diameter of the filament in the extruder has increased. This makes it impossible to pull it back.
When changing the filament, I usualy heat up the extruder to working temperature and manualy feed the filament thru for some centimeters (until the thicker pieces of filament is melted).
Then I release the butterfly bolt for about 10 turns, so no tension is on the filament.
Next I pull out the filament and put in the new filament and tighten the butterfly bolt again.
When the filament is too short to pull, I simply push it thru the extruder, using a small screwdriver and then feed the new filament.
Succes and regards,
BigDee
Thank you all for the notes here. I had my filament break off in the nozzle, and this gave me some good ideas.
In the end, I was not able to get the filament to extrude. Nor was I able to push it out with a new piece of filament - the filament would go in a ways, even being pushed by the extrusion gear, but then it hit a hard stop and would go no further.
I removed the nut securing the extruder gear/bolt, and slid the bolt out. I then head a clear view of the remaining piece of filament that was blocking my extruder. Heating the extruder and reaching in with needle nose pliers, I was able to back the fragment out. Once I reinstalled the gear/bolt, the extruder was ready to use.
Hopefully this will help some future users.