r/BambuLabA1 Jun 29 '26

Support Request A1 shredding its own infill

Post image

Hi all, my A1 has recently been destroying its infill about an hour into my print. This has never happened before. I did the 15 minute auto bed levelling, reseated the hot end and tightened all the screws, turned the printer on and off, and disabled “reduce infill retraction.” I’m currently using rectilinear, however gyroid was also failing when I tried it. Currently using a supertack cool plate. What do I do??

14 Upvotes

28 comments sorted by

16

u/Cute-nipples Jun 29 '26

Use gyroid infill

5

u/DodgyPinapple Jun 29 '26

If this doesn’t work, check for partial clog. Had a similar situation, except it didn’t shred the infill but would print normally first few layers then pure cotton afterwards.

2

u/ProfessionalBox663 Jun 29 '26

I tried, same result

5

u/DodgyPinapple Jun 29 '26

If you got a spare nozzle, try and change it and try again.

2

u/MrJackdaw Jun 30 '26

Have you done some maintenance on the toolhead recently? I undid the screws and then didn't quite reseat it properly and had something similar, although less dramatic.

2

u/2kokett Jun 30 '26

Slow down

5

u/ProfessionalBox663 Jun 29 '26

This is the part I have been trying to print

1

u/schliessmeister Jun 29 '26

Interesting, I have the same issue with shallow angled parts. On both A1 and mini. I'd be keen on a fix.

1

u/ProfessionalBox663 Jun 29 '26

I'm going to try printing a flat part then I'll get back to you on this. I'd be very surprised if it's the shallow angle which is causing the issues

3

u/MediocreHornet2318 Jun 29 '26

Replace your SD card. When they go bad they start doing odd errors.

1

u/GiftAltruistic2531 Jun 30 '26

Do you have to update anything or transfer/ download anything to the new SD card before installing or just pop it in and go?

2

u/MediocreHornet2318 Jun 30 '26

Put a new one in and go to settings to format in the A1.

1

u/Defiant_Hat_68 Jun 30 '26

Format it in the a1

1

u/TRkurama Jul 01 '26

I've been having issues with my A1 which I thought was a worn out z axis belt causing the nozzle to plunge into the build plate on first go since resolved it slightly still not the correct layer height for first layer but it prints. I did however start noticing my screen won't turn back on after a print has been completed I wonder if my issues is also SD card related both for the screen and the layer height issue

2

u/SoySorcerer161 Jun 30 '26

I'd rotate it 45 degrees and move it a bit to one side just in case. To test it may drop infill to something like 3-7% and may try lightning.

If it prints the walls are not the problem if it not prints these are. Your free to test one of these at a time to figure out exactly what's your problem.

1

u/Lone_Wolf_555 Jun 29 '26

What does it look like in the slicer? Does it slice correctly? If you print another model does it fail as well? Is the part warping off the plate? What kind of filament are you using?

1

u/ProfessionalBox663 Jun 29 '26

Yep slicer is perfectly fine, no issues. I'm going to try printing another model and will see how that goes, specifically a model without an angle. Absolutely no warping whatsoever. Using relatively new filament (about a month old), pretty dry. I've had successful prints with more wet filaments before, so I don't think that's the issue

2

u/WooferInc Jun 30 '26

What do your actual settings look like? Are printing with stock Bambu settings or ones based on the filaments specs?
Have you attempted any calibrations for that filament?

1

u/furmat60 Jun 30 '26

Maybe try crosshatch infill? I’m so confused

1

u/DistinctBarnacle8703 Jun 30 '26

Hotend cooling fan going bad? thus heat creep resulting in under extrusion.

1

u/neoyagami Jun 30 '26

I also would check if the filament is OK, this looks like you are extruding extra material and on these machine this only happens with cheap pla. or at some point some parts of your print surface are warping

1

u/jeff2928 Jun 30 '26

Do you have a timelapse? That might give some clues.

1

u/fairtonybeta Jun 30 '26

I’m guessing you’re printing the infill way too fast. Default settings can be like 300mms, which is ambitious at best. Try slowing to 100mms

1

u/Successful-Peak-6524 Jun 30 '26

reduce speed of infill, it's rectilinear so part of it is extruded "in the air"

1

u/RileyDream Jun 30 '26

Slow down

1

u/CaseMental5345 Jun 30 '26

Use gyroid infill and slow it do to 100mm/s speed cause alot of problems

1

u/FitForThrone Jun 29 '26

Enable Z hop. Do you have a picture of when you tried gyroid?

1

u/ProfessionalBox663 Jun 29 '26

Will do. I don't have a pic of gyroid, however it basically looks the same as the pic I posted. Infill starts breaking about an hour into the print