100% repeatable (4 times out of 4) nozzle blockage on a print.

[ChudsterGit]

Bambu Studio Version

1.9.3.50

Where is the application from?

Bambu Lab Official website

OS version

Windows 10

Additional system information

No response

Printer

X1 Carbon

How to reproduce

Import and slice model Send to printer

Actual results

Around layer 45 the printer stops feeding filament through the nozzle. No error is reported and the printer continues regardless, not printing.

Expected results

Upon stopping the print there is a 'cannot retract filament' error. At this point the entire printer head/extruder assembly has had to be disassembled, and the stuck filament removed. This has happened 4 times in a row.

Expected

Point of failure

Results

In the final attempt I realised there was an error seeming caused by the file itself, so changed the infill (just to make a change to the model file) but the result was the same.

Project file & Debug log uploads

Project File Short Edge Test.zip

Log File debug_Sat_Aug_10_14_44_59_22560.log.zip

Checklist of files to include

• [X] Log file
• [X] Project file

[ttt888zzz]

HI ChudsterGit, Is there a red exception message here, like the picture below

[ChudsterGit]

Hi there - sorry, no - no red box. The print continues as if there is filament passing through the extruder, but nothing comes out. In each attempt I have manually stopped the print (the first time at 99% 'complete') - and it is only after stopping it that I received the message about not being able to retract the filament. This is accompanied by a red flashing light on the AMS.

From then on I have had to completely disassemble the extruder each time. In my 10 months of owning the printer I have only had 2 other filament jams - it is strange that I get 4 now in exactly the same place on the same print.

When trying to un-jam the filament I can manually 'rock' the yellow drive wheel, about an 8th of a turn before it tightens too much, and can see the filament move a little. But these are the extents of home much the filament can move - maybe 2-3mm worth.

[ChudsterGit]

Hi there - in addendum to this issue, I printed two of the models simultaneously and they both completed fine.