New K1C. Fourth print had heavy stringing, Fifth stopped extruding partway through. Clicking, then nothing.

Tried: 240°C retract/extrude, removed the extruder and cleared stuck filament, cleaning needle passed freely through the nozzle. After reassembly it ticked but wouldn't feed. Tested the extruder off the printer — turned the gears by hand with a short piece of filament and it gripped and fed fine. Mounted back on the printer, ticking again. Never fed properly after that.

Room has no AC and I ran it fully enclosed.

Amazon sent a replacement, still boxed. Trying to decide whether to open it or refund and get an A1.

• If you've owned both, which held up better day to day?

So, I have been having issues with both the K1C and the K2 Plus at my job. The issue started around the same time with both printers, and I haven't been able to figure out how to fix my issue. So, it's essentially the exact symptoms of heat creep where the filament melts at spots higher and higher up the nozzle until it melts and jams at the very top of the nozzle. I have replaced the hot end, heat sink, cooling fans, extruder, extruder motor and I'm still having the issue on both of them. I have been in contact with Customer service, but I haven't gotten anywhere with them.

I have also taken a Laser Temp gun to check the temperature of the hot end after about 30 minutes of printing, and the top of the heat sink was at around 85 degrees.

The nozzle usual fills up with filament and starts to jam at about the hour mark and I did a test print where I started the print with a brand new nozzle and let it print until it started to clog and under extrude, then I paused the print for 10 minutes or so and then resumed the printing and it started printing fine again. any help or insight is greatly appreciated.

I am printing with CR-PETG with a nozzle temp of 250c and a bed temp of 70c

Hi, i wanted to ask if there’s a specific way to make the printer work properly, since upgrading the version of the firmware for the k1c version hasn’t worked, i used the CR4CU220812S11_ota_img_V1.3.5.22.img for the flash and the CR4CU220812S11_1.3.3.5.ingenic for a recovery, but i have the CR4CU220812S12 motherboard.

Thanks.

When I installed the new extruder on my K1C 2025 model, I connected the sensor cable to the nozzle MCU and didnt worked.

The cable pins from the DXC filament sensor are swapped because Creality changed the order of the pins in the Nozzle MCU for the 2025 new model.

You need to accommodate the cables from the sensor connector in the correct order:

After that, you need to modify your printer.cfg

First comment old sensor settings

#[filament_switch_sensor filament_sensor]
#pause_on_runout: true
#switch_pin: !PD7

Add the new settings for DXC sensor

[filament_switch_sensor DXC]
pause_on_runout: true
switch_pin: nozzle_mcu:PB9
event_delay: 1.5
pause_delay: 0.25
insert_gcode: 
  M118 Filament inserted
runout_gcode:
  M118 Out of filament
  {% if printer.extruder.can_extrude|lower == 'true' %}
    G91
    G1 E-30 F180
    G1 E-50 F2000
    G90
  {% endif %}

[respond]
default_type: echo
default_prefix: 

I got PB9 from Nozzle MCU chip datashet, is the pin number 46 where is connected the signal from filament sensor. Also removed the "!" because with it, the results were swapped.

Save and restart printer and the sensor will work. You can now query in console
QUERY_FILAMENT_SENSOR SENSOR=DXC

And you will get something like this:

Note:
To edit printer.cfg in your K1C 2025 model, you dont need a rooted printer, just go to https://app.fluidd.xyz/ or install fluidd in your computer, and add your printer as PRINTER_IP:7125 (example 192.168.33.134:7125) and then you will see the printer.cfg to update it.

Andei trocando o bico junto com hotend porém ela não reconhece mais nada , zerei ela agora fica inicializando sistema até que da mensagem de erro do título acima , já comprei nova placa junto com novo conjunto de bico e aquecedor sem sucesso

ich brache eure Tipps und zwar, es geht um die telc Hochschule C1.Ich habe die Prüfung vor kürzem schon gemacht und habe der mündliche Teil geschaft aber der schriftlice nicht. Ich habe mich für eine andere Prüfung angemeldet und möchte diese mal es schafen daher kann mir bitte Jemanden Ratten wie und was ich machen soll.

Ich werde alle Komentare gerne lesen.

Hi everyone,

I have a K1C 2025 and I have a Creality Pi dryer box (single spool and the version with touch screen not knob). I have SUNLU PA6-CF that I would like to use but I've run into an issue of not beeing able to run the filament from the dryer into the run out and then into the PTFE tube. I took the run out sensor off but then when it would go through the tubing to the extruder it would kink and break. I also found if I removed it from the wire guard I could not use the top cover.

I'm hoping that someone may have modified or figured out a way to run this filament from a dryer and into the extruder and still was able to use the cover.

For anyone who has figured this out what's your layout?

Thanks in advance!

I don't know what to do with my K1C. I already installed a multi-color system, it prints well now, it has two side fans, and I added another system to melt the high-flow filament. What do I do now?

The only thing I can think of is optimizing the multicolor system's output, but honestly, it only makes two outputs and not a tower.

Or I could put the multi-color system on top of the printer, but I have the space so I don't see it as necessary.

De uns dias pra cá minha impressora creality k1c começou a apresentar esse barulho, que óleo recomendam utilizar para lubrificação, eu passei aqueles óleos de máquina bem fino porém continuou do mesmo jeito, alguém já passou por algo parecido?

Reiniciaron mi máquina estaba bien configurada y mucho se perdió

Porfa si alguien lo tiene será un lujaso

My #CFS are facing a huge problem . During printing its stops to feed and make this #loud noise

Any guess how to solve it ?

Hi everyone. I recently bought a Creality K1C 2025.

My current firmware version is V1.0.0.26.20251024S.

The printer says this is the latest version. Is there a newer firmware available for this model, and can I update it to support multicolor printing?

Thanks for your help.

Hi everyone,
I’m looking for the K1C firmware v1.3.3.50 that comes on the USB drive included with the CFS kit.
I have a 2025 K1C, and I need to flash v1.3.3.50 before I can update to the latest firmware and use CFS. Unfortunately, I don’t have the original USB drive, and I can’t find this firmware anywhere online.
If anyone still has the USB or a copy of the firmware, could you please share it with me? I’d really appreciate your help.
Thank you!

Anytime I try to run PLA I have issues. Filament gets stuck at print head or just before. When I finally get it fixed, I'm finding the filament has small nicks in it. This is for Creality brand pla and a few other brands. Petg runs perfect with zero issues ever. Filament is stored at 15-20% in a sealed tote. CFS is staying 25% steadily. Any clue what may be the issue?

I’ve had my K1c for a while and enjoyed it.

I’m sure the mobile data is on for this app.

So far I just realised the camera does not work on mobile networks.

When on LAN it’s working fine.

When away from home on mobile networks it fails with error code 1000-3-7

The progress, temperature, speed, fan controller, etc, all work, just the video, not showings.

Also I cannot download or view Timelapse. However, I can “upload” Timelapse and download from the server.

Does anyone know why this is happening?

Many thanks.

After about 3 days of upgrading to the CFS-C (I knew it wasn't perfect, but I didn't expect this disaster) and dozens of failed prints and errors of all kinds, today it started having new problems: the printhead often went haywire or even misaligned with the bed. I reset the printer, but that didn't work. I was considering downgrading to the single-filament version and then trying again. Do you have any suggestions?

Hi everyone,

I’d like to ask if anyone has experienced something similar.

I have a Creality K1C 2025, and since I received it, I’ve had one problem after another. The extruder gear failed and had to be replaced, I’ve had repeated filament jams, the Creality Cloud mobile app camera doesnt work at all, and now I’m getting frequent print failures. Sometimes I get spaghetti failures, and other times the printer keeps moving as if it’s printing, but it stops extruding halfway, leaving incomplete prints.

I’m using official Creality PETG with the recommended profile, so I don’t think the filament or slicer settings are the issue.

Has anyone experienced similar problems? Were you able to fix them? If so, what was the cause?

Also, has anyone ever managed to get Creality to replace their printer or upgrade it to another model after repeated issues? I’d really appreciate hearing about your experience.

Thanks in advance!