Problem Description
I’ve had my A1 for a little over a month now with no issues. Recently, my 0.4 mm nozzle clogged (unrelated issue) and I replaced it with a Bambu Labs hardened steel 0.4 mm nozzle. Afterward, I re-ran all calibrations on the unit.
I noticed that after the swap, my prints all have this strange wave-like feature in their outer walls (see Images below), regardless of layer height. I spent the last 2 days attempting to fix the issue. I am familiar with engineering but I’m new to 3D printing, so I’m a bit lost. So far, I’ve attempted the following with the standard Benchy & standard slicer settings, all with no effect:
-
Uninstalling and reinstalling the hotend assembly, verifying that all bolted connections are solid. The 4 screws on the backside of the heater were a bit loose but not concerningly so. I confirmed that the nozzle was correctly seated and clipped according to documentation. Re-ran calibration.
-
I found a resource online that mentioned this sort of issue could be related to axis ringing, so I re-tensioned the Y-axis belt. Re-ran calibration.
-
I ran the PLA filament at different temperatures: 220 +/- 10C. This had only heat-related effects you would expect (extra stringiness at higher temp, less adhesion at lower temp).
-
I tried other PLA filaments, concerned about moisture. A newly-opened bag of PLA had the same issue, as did another roll that is less than 1 week old.
I have not noticed any other concerning issues.
Images
Hardware Information
- Bambu Lab A1: Software Version 1.04.00.00
- AMS Lite: Software Version 00.00.07.94
- Filament: Elegoo standard PLA, Elegoo matte PLA, Bambu Labs standard PLA
Thank you very much!