Hi, I have absolutely terrible VFA on all materials, especially on the X-axis. I tried re-tensioning the belts, lubricating them according to the wiki, but nothing helps. Did Bambulab really make such a bad printer?
In the photo PLA and ABS (black), speeds 150-200 mm/s
P1S
The previous P1s printed better. I also noticed the problem is almost always on the back side of the X. Here’s a cube that was printed, showing how much worse the wall facing the back of the printer looks.
I think there’s a mechanical issue here, or Bambulab has broken something in the vibration compensation. Reducing the print acceleration to 3000 doesn’t solve the problem.
If disable K calibration and enter the values manually, you’ll get roughly the same result. And I see this on all the printouts, always on the back side of the X.
Youre not the only one, i was looking for that also , my machine does the same, also when you looking on youtube reviews, there also some machines doing that ! And the response for the VFA
How do you do the vfa test i cant find it at bambustudio
Enable Develop Mode at the bottom of Preferences (Ctrl+P).
Another calibration menu will become available on the top line:
It worked awesome thank you
It looks like the p2s is just a faulty printer. And there’s been no response from Bambulab. Maybe they’re aware of the problem and it’s software-related? Or maybe it’s defective and a recall is needed. But I’m increasingly tempted to return it.
Ill dont think an software update will fix that, it seems to be an mechanicel issue .
I agree, it looks very much like a mechanical issue. That said, yes, there are a few that print quite well. But judging by everything, good printing for the P2S is the exception to the rule. 
For me its my second Bambu, ive first pruchased , the a1 mini years ago, but that performs well, compare to the p2s it looks really really bad ,iam really think about , to return it .
So it seems like the most machines have this VFAs
Mine got stolen before i had time to check this up… honestly i was planning to rebuy but seeing these…might just get another h2d, at least thats been consistent with me the last months…
Personally, I came from an Creality K1, which was prone to ugly VFAs. Under 100mm/s they where terrible, so everything high detailed / slow printed was bad. (they fixed it by using smaller pulley wheels on the K1C)
The P2S is MUCH better. Using the 0.2mm high quality preset (60mm/s on outer walls) I don’t see any VFAs. (see attached picture)
Using the 0.2mm standard preset (200mm/s on outer walls) I think VFAs are well controlled. The slightly layer shifting is more noticeable than VFAs, but still a very good quality.
There should be a mechanical issue if you have that bad VFAs, since I don’t have it on my machine.
For me it’s the other way around now, k1SE prints better than P2S)
would loved, if my p2s would print like that
Does anyone have access to the beta testing section of the forum? Could you check there to see if there’s a description of our problem? Maybe there are ongoing discussions and solutions?
No, i dont see any beta section discuss, but iam writing with the support , they offered me to change the machine , for an new one . Because there was at beginning much issues with it
That’s great, I’ve only been offered a vfa test so far:-)
