Can we iprove the K2 plus cfs

Flagship K Series Creality Flagship K2 Plus & CFS
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You will see from what I said about my problems in my comments here:

That I had a lot of trouble with my K2 plus. It shows that I did a lot to resolve the problem and was finally successful.
Now when you see all the things I did all but one were either general cleaning or simply replacing like for like.
The one thing which was a change was snipping a piece off the spring in the cfs 4 way hub.
I have seen many comments on this from warning that it would be a disaster to one saying he had done it on 6 machines and it has always worked well.
In my case since doing that the whole printing operation has been much better. The surface finish is better than it has been in the past, even compared to the first prints I did.

Obviously with all manufactured things there are tolerances and because each item can have a range of values so when all the parts are put together there are going to be overall differences. So although I cannot prove that it was snipping the spring has caused that improvement it seemed to be the only thing it could be.
That set me to wondering if we can check our own cfs. if any of you would like to examine the filament when you have used your cfs. What I am thinking is that you print something tiny then afterwards you will have about a metre ( maybe meter to you ) of filament which has been through the hub twice. feel along it to see if you can detect any roughness. If you can it really has to have been caused there hasn’t it?
I’m sad that I hadn’t thought of this before all the trouble I have had to physically compare what it was like to now.

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Can we improve the K2 Plus CFS

TL;DR Answer: No.

Not in any meaningful way, because the problem is not the user community. The problem is Creality.

Let’s be candid. If Creality was seriously concerned with what customers thought, they would not have released a half-baked slicer, a half-baked printer, and a filament management system that only works properly inside a narrow band of ideal conditions.

This is not an accident. This is Creality’s product culture showing through the machine.

There is a very real disconnect between Chinese-designed consumer products and Western expectations of product maturity, documentation, software polish, and post-sale accountability. Creality is a textbook example. The machine is close enough to advertise, close enough to ship, close enough to collect the money, and close enough to let the user community discover, document, explain, patch, and MacGyver the rest.

That is the behavior often described as chabuduo: close enough. In this case, close enough to sell, but not close enough to call finished.

The CFS is a perfect example. It is presented as an integrated filament-management system, but in practice it behaves like a fragile accessory that only works reliably when the filament, slicer profile, sensor behavior, spool handling, and user expectations all stay inside Creality’s narrow comfort zone. Step outside that box and suddenly the customer becomes the unpaid test department.

The alternative is not much better. Bambu Lab gives you a more refined ecosystem, but only if you accept their rules, their workflow, their firmware decisions, and their walled garden. I recently made my escape from that ecosystem for exactly that reason. Their product is more mature, but you can only use it the way they decide is acceptable.

So those are the two ugly choices.

Bambu over-controls the product.

Creality under-finishes the product.

With Bambu, you get the polished cage. With Creality, you get the unfinished kit and a forum full of users trying to finish the engineering after the sale.

I do appreciate that Creality does not interfere much with modifying the machine. That matters. But let’s not confuse that with virtue. Leaving users free to fix your unfinished product is not the same thing as delivering a finished product.

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I replaced the spring with a lighter one in my first CFS I got with my Hi in March 2025 and it solved all the jamming issues I had had. (I am not strong enough to cut a piece off - I tried). But it is my understanding that Creality made the change to a lighter spring somewhere along the manufacturing process. The CFS I got with my K2 Pro in September 2025 did not need the spring fix and has worked perfectly. I very rarely get jams in either one now (it is going to happen occasionally just like nozzle and extruder jams). I didn’t notice any change in print quality - just no more jams. And I never felt any roughness on my filament.

Of course you have no way of knowing if the CFS you get is one of the first batches with the tight spring or the later ones with the softer one which is problematic, but once you know this might be an issue, it’s an easy switch if you experience a lot of jams in the cfs.

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I appreciate what both of you have said. Previously I had an Ender 3 S1 plus. This was my first contact with3D printing and not that it matters the first time I had tried cad at all. I was 78 when I started and only did so because my hands shook most of the time after 2 TIAs so I couldn’t do soldering as in electronics which had been my hobby for about 70 years at the time. I’ve been really enjoying this although frustrated at times. When I saw the K2 plus bundle a few months ago I went for it. Maybe I should have looked elsewhere such as prusa or anycubic but would I have been any better off overall? Creality aren’t going to refund any of my £1100 I spent so as I see it my only option is the same as for anyone else who has already bought one - fix it myself. Hence to me posting ideas to help each other is a viable alternative.

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The vast majority of my CFS problems have been self induced by not being careful enough when taking it apart to clear blockages. Since finding out the hard way, my CFS problems have more or less disappeared. I haven’t even altered the length of the spring in the hub. The one thing that I have done to make things easier to clear the CFS is install an inline filament cutter at the rear filament exit of theCFS. This shortened the length of the ailment that has to get past the hub gear and it means a short tug and its out. Of course since installing it 3 months ago I have only used it twice. I think this or something similar should be a standard fitting on the CF.

Filcutter2
Filcutter21000Ă—840 108 KB

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