K1 & CFS-C Issues

Flagship K Series Creality Flagship K1 & K1C
1

I’m having several issues with the CFS-C on my Creality K1 (not Max)

Initially, everything went fine. I installed Creality Print v7, from scratch on a new desktop, so no previous profiles or settings where there.

Installed the firmware included on the CFS-C bundled USB stick, the firmware info on my printer now shows this:

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There’s a Benchy .3mf file included on the stick, so I sliced that with Creality Print (I didn’t use the pre-sliced .gcode file) using the default K1_CFS-C profile and it printed perfectly, including using all filaments.

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I then sliced the included riser .stl files, again, printed everything without issue.

Next day, I then sliced another .stl file and sent it to print. Using the same profile. Nothing printed, first layer adhesion just didn’t work

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I tried using a different build plate, redoing the calibration & bed-levelling procedures etc. Would not print first layer.

Eventually, I managed to get the first layer to print buy doing some heavy adjustments to the print profile and the auto selected Hyper PLA profiles. Mostly, those settings involved changing the build plate temperature to 60, nozzle temp to 225 etc.

Now I’m having more issues. The CFS-C just constantly keeps unspooling then re-spooling the selected filament, it’ll do this for 30 - 40 minutes after starting a print, eventually, it’ll either print, or, more likely, throw a clogged error. I’ve dismantled the extruder and confirmed that there’s no clogs. I’ve tried using it with the extruder lock in both on & off positions. I can confirm that the filament is reaching the print head on all occasions.

Anyone have any ideas for further troubleshooting?

2

I’ll update this with the solution, in case anyone happens across this post with the same issues.

The problem was, my hotend & extruder. I needed to upgrade to the unicorn hotend and the 2025 extruder. After I installed those, everything’s working fine.

If you have the old hotend, with the PTFE tube, you’ll likely encounter the same problems.

1 Like
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Shoot looks like I may need to do this. Mine seems a little bit less finicky than yours. For mine, any time the color is changed, it doesn’t extrude enough to get rid of the old color before printing or sometimes just doesn’t seem to be extruding when changing.

4

+100. I have the same problem!

After rolling back to the monochrome firmware 1.3.3.46, the printer prints perfectly. After installing the color firmware 1.0.0.26, the printer starts printing the model in the air, not on the table!

WBR, Alex Kojanov