Help! H2D Layer Shift at Support Transition

Good morning, I’m having a problem with my H2D printer when printing with supports. I was printing with PA6-CF and used PA Support material. After my first print attempt with supports clogged the nozzles, I ordered 0.6mm nozzles from Amazon (since Bambu ones weren’t available in the shop) and restarted the print.

The nozzles are no longer clogged, but now I have a new issue. I’m experiencing a massive layer shift in the X-Y direction, approximately at the height where the support structure ends. Has anyone encountered this phenomenon? Does anyone have an idea how to solve it it? I’ve tried looking through all relevant forum posts but haven’t found anything comparable so far.
WhatsApp Image 2025-06-04 at 06.10.55
WhatsApp Image 2025-06-04 at 06.10.54
WhatsApp Image 2025-06-04 at 06.10.55 (1)
WhatsApp Image 2025-06-04 at 06.10.55 (2)

I’m going to respond (and bump) this thread as I have now had three of these shifts happen in the past 2 weeks. They are not as severe as OPs, but it’s still bad enough that I’m making a comment.

All 3 have been on relatively long prints, with one of them printing right now, that I’m going to just let finish.

I have zero idea what could possibly cause this. In the first photo, it only shifted on half the part, the other one shifted on the entire part. My parts definitely are not losing adhesion and moving, as that would cause other issues.

[Edit]: I’d like to note this ONLY happens with prints that have supports. I printed QTY2 custom size box drawers that were taller than the second failure, without supports, without any issues(and it looked excellent).

P_20250530_113416
P_20250530_145534

PXL_20250605_133437285
PXL_20250605_133529018

Here is a photo of the one in progress. You can see on the right side it’s shifted, and it corrected itself on the left side.
PXL_20250606_065851814.MP
PXL_20250606_065922131

Just to rule it out… Is the mesh you are slicing a valid mesh? I.e. doesn’t need repairing, manifold etc.

Yea it is.

The second object I posted I printed before with great success, and a friend of mine has printed QTY20 of the other two pieces on his X1C from the same exact STL without a single error. On his, he isn’t using independent supports. He just strictly prints it in ABS.

I also haven’t had a single hiccup with this printer in 300 hours until this issue started

Screenshot_20250610_123517_Bambu Handy
It happend again on my site. This time I printed petg. It was a modell taken from makersworld. I changed some parameters like ironing and precise z high and so on I dont know if this could have some influence.

In the meantime I have the feeling that it could be related to the ironing feature.

It looks terribly printed and why the bed is heating at 90C? everything looks wrong here…

Oh now that you mention it… do you always offer such topic-specific and solution-oriented comments?

Sorry, I’m a bit ahead of the dialogue. I was just wondering why it’s printing with this settings, because the filament might act very strange when the user apply inappropriate settings, it looks quite overextruded and over extrusion leads to layer shifts (it make build ups that would knock hard on the nozzle, causing layer shifts). For PETG, bed temp at 90C and nozzle temp at 255C is not impossible, but quite rare. 90C of bed temp might really cause issues. Also the part shown here looks like the cause of issues:
image

Did you happen to pull a file that was printed in ABS or a higher temp filament, and then just change it last minute. Something looks way out. Did the file think you had abs, and you had an off-brand petG in the slot that doesn’t have RFID tag?

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I always thought they had step loss recovery, for impacts. Assumed this would stop layer shifts from impacts.

Also, some pa6-cf brands suggest 80c-100c bed temps

260-300 nozzle temps

The 90c bed for petg may be because everybody was saying add 10c to stop adhesion issues on an h2d

I think that’s what happened here as well.