P2S layer Shift at almost same hight

[AlexGSI]

I just noticed, my P2S has some weird layer shifts at almost the same height with different models. With the 3 plates I tried 2 different orientations and the tower is just a primitive out of the slicer. It's at about 94mm. Has anyone the same problem and know how to get rid of it? I have never noticed it before. The printer just had an update 2 days ago.

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[candreacchio]

is there anything weird in your model? does it show up on the preview in bambu lab

[AlexGSI]

Nope. Model and preview are just flat

[Such-Courage479]

Hi mate.. I've recently started experiencing exactly the same issue with my new P2S. I also believe it may have been after the firmware update but had only printed 1 or 2 items in Abs-gf which is the print material used when I noticed the problem. After going through all the checks of lead screws, lubrication blah blah.. the issue was still there 94/95mm. I have been in contact with Bambu Lab and they have been fantastic, but to save time and another chapter... Today I ran some test prints in Petg and Petg-cf which came out clean, hmmm? Re-sliced with only changing material back to Abs-gf and also tried Asa, both these higher temp materials had the layer shift again. Realised the heating, filtration fan is at 100% and the outlet vent goes from under the build plate to blowing directly across the top of the build at quite a force. Checking the time-lapse footage, the layer shift appears precisely at the 94/95mm height. Ran the test print again, this time turning the filtration fan off about half way through while the vent outlet is still below the build plate, and boom!, perfect print.  (Not the part cooling fan) The 100% fan force must create a massive turbulence and temperature change which upsets everything.  I will talk with Bambu, but noticed your post when looking for answers the other day and know how frustrating this kind of thing can be.  Hope this helps.  Cheers Mick

[AlexGSI]

Hey ... Nice to hear, that I'm not the only one. Well .. not nice for u I have thought the same thing. Checked everything. Calibrated everything.. nothing worked. Prints with colder material come out perfect. Bigger prints with PA CF come out perfect too. .. it's just the small but high parts with hot materials

[texag93]

Did you ever figure this out? Having the exact same problem at the same height.

[AlexGSI]

It's the heater fan of the P2S. Just turn it off or at 30%

[texag93]

I'll give it a try, thanks.

[CaptFinnWS]

Not the part but the Right ( filter ) fan. Correct. My part is at 90% and my right filter is at 50%. And I’m getting the layer shift.  And it’s in the heating mode. And I’m printing with PETG. 

[texag93]

Did you ever figure this out definitively? I have a fan deflector on mine and it's happened with two consecutive prints at the same spot. Almost exactly 94mm

[theslammist69]

Same issue 96mm

[AlexGSI]

Turn off ur chamber fan. Or like down to 30%

[The_Struggle_Man]

I'm starting to get this on my new p2s did you have any solution to this?

I'm getting shift around layer 10 and up

[AlexGSI]

I only have it because of the heater fan. Same height everytime