Hi everyone,
I’m having a problem with my K2 Plus printer. The filament is stuck in the extruder, and I’m unable to push it through. I’ve heated the nozzle to the maximum temperature, but when I try to push the filament using the tool, it doesn’t move and remains blocked.
Has anyone encountered this issue before? Any advice on how to resolve it would be greatly appreciated!
push from the nozlle wit a needle. probaly there is somthing inside that wont melt (can be the white stuff from the extruder motor). i would replace the nozzle and take a closser look then.
probaly the extruder jamed and there is some fillament stuck. LOOK OUT FOR THE SPRING.
you can also take appart the extruder Replace K2 Plus Extruder Front Cover | Creality Wiki
If it’s too jammed up using the thin needle will only end up bending it.
You can use the thicker tool in the kit to “pull” it out - expose the top end of the nozzle by removing the front of the extruder, then you need to heat up the nozzle to just above the stuck filament temperature, then with a heat source e,g. gas-torch or lighter, heat up the tool near the end until it glows red, Then quickly plunge the tool into the top so it melts into the filament a short way, then hold it for a few seconds so it cools sticking to the tool. Then you can pull out the tool and the stuck filament should follow.
I’ve had to do this a couple of times and it’s worked for me.
Thank you for your messages. Unfortunately, my problem seems to be more complicated than a simple nozzle clog… I replaced the nozzle because I couldn’t clear the blockage, but after starting a print that lasts a few minutes, the new nozzle gets clogged again. I can’t clear it, even though the nozzle heats up properly and nothing seems broken when I disassembled the extruder…
Check cutter position. It blocks filament if jammed.
Please, NEVER do that unless you have filament in there which you printed @300+°C!
If you heat up some filaments to >300°C they start to ‘burn’ and clog the nozzle even further!
Some filaments, like matte or some glitter/wood/Silk/CF/GF, leave small particles in the nozzle which do not go away easily by themselves. The only way is to use some high flow filaments and print some high flow test (max flow rate for example) to see if nozzle is free or need to be replaced.
I had to exchange nozzle after ~500h printing which is pretty normal.
But if you cannot push the pin through a new nozzle is for sure necessary!
have you fixed it? just to be clear, whether the problem is in the nozzle or in the extruder gear.
I had the same issue before. The main culprit is the extruder motor gets too hot, and the heat propagates to the filament through the gears. Its causing softening of the filament. Most of the times it got clogged in the extruder. But sometimes it also causing clogging in the hot end, particularly in the heat break area (outside the heater area, thus no matter how hot you heat up the nozzle, you just cant un-clog it).
To clean it: heat up 1.5mm allen key with a gas lighter, and then stick it to the filament inside the heat break. Then after cold enough, pull out the troubled filament. The troubled filament appeared to be bent like a snake, indicating that its too soft when pushed by the extruder.
My solution is by blowing air to the extruder to cool off the gears using aquarium aerator through silicone hose. It works beautifully. No more jam and clogging.
Is the nozzle tight in hot end, Have you checked the 2 screws above the rubber tube on hot end. If loose then heat will not travel along nozzle and you get blocks
Hi everyone again, I was away for a few days. I still haven’t resolved my issue, so I decided to contact Creality support. They sent me a stepper motor for the extruder, which I replaced, but the problem still persists. Here’s a video showing an example of the issue — thanks to everyone for your feedback.
Does anyone have an idea of what it could be? The gear seems stuck, and the gear support looks like it’s being forced and about to pop out. Link for the video : Unique Download Link | WeTransfer
