Although i started 3D printing relatively recently (2+ years) i have been following the technology and subscribed to many forums since its beginning in early 2000s.
Unfortunately, i have not seen a single manufacturer that improve/correct any flaws of the models they put on market. Whenever they managed to resolve the issues of that model, instead of replacing those parts of their customers they branded the corrected one as improved/ upgraded and start selling it as V2.
I have seen a only a handful of times that they recall or replace “very unacceptable” products. That is it. As the community was tech savy and love to find solutions to problems, they let the customer find their solutions and tried to get away with their “shame”. This is the dark side of this industry. It is not one of a kind but very rare.
The risk for BL is; their potential customers are not those tech savy geniuses of the old times but some average Joes (with money) who wants a “Plug and Go” technology and needs to be assisted even to power on things. And they can be a real Karen if they are pissed.
I’m certainly not recommending the Qidi, as it’s had its own share of problems early on and I’ve not tried one myself. Therefore it would be wrong of me to say it’s worth a look until I’ve tried it. However one of the videos I watched from functional print Friday shows the problem we both have,
If you look at the far left and far right there is some slight ringing, but a markedly different outcome. This was with PETG, so slower printing and more likely to show the problem. If that was the quality I was getting from my X1 I’d have been very happy and I wouldn’t have returned it.
It’s reportedly much quieter as well which is important for me.
Hopefully the change in belts fixes the problem for you.
What’s in picture 1 i see as well with lower speeds and PETG or slow PLA materials, like default Overture PLA which has speeds from 40 to 90! Which, tbh, is not acceptable as quality. Period.
Qidi def looks better in terms of VFA!
I don’t think me changing the belts is going to make a HUGE difference. But i’ll try it, why not. Can’t hurt more than it is now.
Hello, i just want to advice u, like u said, changing the belts probably do nothing to the problem. I have the x1c from November 2023 and I’ve the same problem. One week ago the supports send to me new x rods after checking my logs for really high resistance in the x axis. After my first print in Polycarbonate I start hearing a lot of noise but i think the problem I have was there for a long time. But this isn’t related, in the x rods replacement they give also the xy belts and vfa is still there. Nothing changes, the noise is gone and printer sound like new (if I remember correctly lol), but other problems like vfa or ghosting are there. They have send to me some custom fixing block from they factory in china for the belt tensioner because I’ve the suspect from the start that one side isnt aligned like the other. Dont know if this is related and also I’ma little scared to put some custom blocks that’s not supposed to be there. In theory they need for fix the tensioner in the right position if the insert on the tensioner is loosing or start to coming out, but this is only possible on the upper position because on the lower there is the motor. This is what they said to me. The scary part of changing the belts is to remove the olds without damaging other components, for me it was a pain and I’ve cut hands in the process because one side didn’t want to came out until I broke it. If u can remove the PCB before and don’t try to remove the LiDAR connectors, first isn’t needed and secondly I’ve tried and almost broke one. I’ve send my feedback to the support because the wiki to me is too messy and have infos there and there. Let me know if u succeed.
If you can rustle up an adjustable HID tachometer, those things are great at finding high frequency vibrations and oscillation’s. If you work in, or know someone who works in an industrial environment with lots of motors and pumps, if they have a VA (vibration analysis) department, they probably have one.
It is amazing the things you can find with that device.
It is a HID strobe light that you can adjust the strobe speed by way of a knob or up/down arrows. You can find harmonics at all sorts of fractions of a motors or pumps RPM’s
Update: seems my VFA is way worse than it should be. When doing the VFA test with Orca, it shows that all speeds and angles under 150mms have some serious VFA. I’m working with Bambu support and i might get a replacement unit.
At 200mm/s, the prints do come up clean now, so the belts did help with that. However, not all filaments or brands can do 150mm/s+, so this is why i want to get a replacement, as i don’t believe it’s normal to not be able to print slow.
Hi! Can you please tell me if replacing the belt helped with the layer consistency? I mean when the printed object is lit from above, like in the first photo of the blue cube in your post.
Yes, that first picture… was a disaster. I also believe that blue filament was not dried or something. I never had a cube THAT bad I don’t think it was due to the belts. Look at the other pictures, like the black cubes.
So i don’t think the belts would cause that. I would double check your settings/filament.
My prints are also smooth to the touch and if you look at them from the right angle or from the side, they seem perfect. But if you turn on the overhead lighting, you can see the horizontal stripes right away. I just wanted to understand if this is the case with all Bambu Lab printers?
Can’t say yet, as i received a damaged unit, which i’m in the process of exchanging.
Btw, their support does take 1-2 days to answer, but they understand and see my issues - and at least we’re getting somewhere. I would say that at least that part is not as terrible as i read on the Creality forums haha. Also it’s Chinese new year, and they still replied.
I pray for u hahahah i’m in a similar situation but they don’t want to change my printer. They are sending to me another carbon rods assembly, tensioner with pulley, two belts (idk why, one is in the carbon rods and they are sending to me another one). I really don’t want to change the rods again, it’s a pain
woah, that sounds like a lot of parts to replace. How old is that printer? I had to change belts on my first one. Wasn’t so bad as i thought it’ll be. Rods, that’s a whole different beast though. Seems like you’re replacing all the major parts anyhow at this point, so a replacement would have made more sense to me. I wonder why they went that way, strange.
I’ve asked to them but they replied “since this ticket is opened for a long time i now resend to u all the motion parts and see if quality improve” I’ve already changed the bed, a fan, carbon rods and belts. Now I have to change again the rods, idler pulley and belts again I’m experiencing a lot of ghosting at all acceleration/speed. The printer is 1 years and 3 months old. On top of that I’ve also ordered a new extruder, new rear panel (because it’s bended idk how), new plastic for the toolhead and I have two new hotend as well. I’ve also buyer a concrete panel and I’m looking around for the foam to put underneath. The printer is in the same spot but I’ve also tried to put on the floor without any improvement. I’m a little frustrated…
Not sure what i’ll do next tbh.
I don’t think it was due to the belts. Look at the other pictures, like the black cubes.
I’m experiencing a lot of ghosting at all acceleration/speed. The printer is 1 years and 3 months old. On top of that I’ve also ordered a new extruder, new rear panel (because it’s bended idk how), new plastic for the toolhead and I have two new hotend as well. I’ve also buyer a concrete panel and I’m looking around for the foam to put underneath. The printer is in the same spot but I’ve also tried to put on the floor without any improvement. I’m a little frustrated…