One of the biggest annoying issues with the Creality K1 is the sagging cable chain.
Several people have already proposed different solutions, but so far no one has tried to correct the chain itself, which is the source of the problem.
But now the problem is in the past.
I reshaped the cable chain so it wouldn't become saggy again.
In my model there is a tolerance of 0.2mm, but in the upper hole of the link I moved it by 0.2mm, so it was tight, with no tolerance.
The problem of sagging occurs due to tolerance gaps. Small gaps added together over several links becomes a large gap.


Difference between original Creality Cable Chain and the model
This model have almost the same size (9x15mm) and weight of original Creality Cable Chain, and it's compatible with other original parts

Weight of original Creality K1 Cable Chain

Weight of the model
Print without support. Supports are built in the model
Print 28 links if you want to maintain original size of the chain cable, but 24 links is enough.
You still need of the chain link riser (toolhead link) to a perfect fit.
https://www.printables.com/model/751437-creality-k1k1-max-chain-link-riser-extended
--Edit--
For the back bracket, I recommend to use the Kevin Claypool version: https://www.printables.com/model/1147205-k1-5-degree-tilted-bracket-for-vinis-chain-sag-fix
If you like my work, don't hesitate to support me by paying me a ☕. Thank you 🙂
The author remixed this model.
Customized for Creality K1
Adjusted some parameters to avoid chain sagging
Redesing to an open type link