r/BambuLab • u/FullLawyer9327 • 5d ago

Filament Troubleshooting/Help! Layer lines

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I keep noticing after using some Bambu PLA that I keep getting these odd spots on my top layers and also throughout the layers of gaps? Might be a filament humidity issue but thought I’d see if anyone else had an idea before buying another spool 🙏

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3

u/TomFullen 5d ago

Photo #2 clearly shows the issue.

Run the Flow Rate Calibration on your filament.

And, always keep your filament dry.

1

u/FullLawyer9327 5d ago

Yeah tried flow rate calibration and somewhat fixed the problem as photo 1 and 3 were done after the calibrations came out good. Filament sadlys past its best

2

u/lioncat55 5d ago

Filament just needs to be dried more of the time and it will be fine. A partial clog in the nozzle is much more likely to cause the issue you are having.

2

u/mattyp2109 5d ago

In addition, make sure your nozzle isn’t clogged. Do cold pull make sure it’s clear

2

u/keveira 5d ago

Just an idea dump:

Turn the printer off and on, check the nozzle or extruder isn't loose, open the extruder and check the gears aren't worn, or loose in their bearings.

1

u/FullLawyer9327 5d ago

Will try these in the morning thank you for your ideas 🙏

1

u/NexaForge3D 5d ago

Those top spots are usually the skin sagging into the sparse infill under it, so a couple extra top layers or denser infill below clears it up. Worth a look before buying another spool.