Printer head damages itself at the end

[TennisRunner]

Bambu Studio Version

1.7.7.89

Where is the application from?

Bambu Lab Official website

OS version

Windows 10

Additional system information

No response

Printer

Bambu Lab p1p

How to reproduce

Slice the project file. On layer 9, add a pause. On pause, swap filament.

Actual results

I left it printing through the night and awoke to find that the printer head cover had disconnected and fallen off completely. The last piece had a hole melted through it from where the printer head was idling. I reattached the cover and pressed the resume button. It went and damaged itself again making loud noises as it scratched and hit against the last printing part. I canceled it manually. The weird thing is that it was like 99% complete and it shouldn't have been printing anything more.

Best guess is that it was trying to do ironing, but it was trying to iron the wrong layer and ended up hitting the part. Or the vertical axis failed somehow, but it makes no sense that it would print it to completion and then lower itself to try and iron the middle layers.

In the photo, I already canceled and lowered the bed. When it was having the issue. The nozzle was flush with that flat middle part.

Edit: I looked the printed parts and it looks like they shifted at the layer pause and are off by 1mm or less.

Expected results

Should not hit the part being printed.

Project file & Debug log uploads

slider.zip

Checklist of files to include

• [X] Log file
• [X] Project file

[SaltWei]

@XunZhangBambu I can not see any abnormal path in gcode file. I guess this is not caused by slicer. Please help to reprint user's gcode file to double confirm.

[SaltWei]

@XunZhangBambu I can not see any abnormal path in gcode file. I guess this is not caused by slicer. Please help to reprint user's gcode file to double confirm.

[BambulabRobot]

This issue has been marked as inactive due to no response for 90 days.