Hello all. I very new to 3D printing and have encountered an issue with printing the walls of this part. See attached image. For some reason, the wall on the right is messed up and the wall on the left is ok. I’ve printed this part four times and have gotten the same results each time, left side ok and right side bad. When the nozzle passes over the middle and right walls, it sounds like the it is dragging or contacting the previous layer. I am just confused as to why it is not doing it on the left side. Very strange. Any suggestions?
I am using a 0.4 mm nozzle and Polymaker Pro PLA. Also, I am using the 0.20mm Standard process in the Bambu slicer as well.
Filament moisture can be another cause. Although PLA is not really prone to moisture problems, it can happen for filament right out of the box. It would produce exactly the kind of problems you’re experiencing.
Chamber temperature. The shape of the model suggests that airflow is different over the object as it is further away from the fan. Try these simple steps:
If you have the door open, close it. If it is closed, open it. Also try venting the top lid. The goal here is not to cool or warm but to create a more even air flow.
Check that chamber fans are turn off or on. If they are off, turn them on, if they are on, turn them off. Again, we are trying to even out the air flow.
Diagnostic Step(not needed but it will confirm the uneven temperature theory)Rotate the model on the build plate if there is room. Try 90 degrees and 45 degrees. See if the location of the wall degradation moves. If it does, that’s a clear indicator of air flow issues.
Change the wall order from the default of inner/outer to outer/inner. This will lay down the walls first.
Change the wall generator to Arachne and the wall order to outer/inner. The latter will lay down the walls before filling in the infill.
Slow the nozzle movements down for the wall. You can do this in two ways.
Switch to quite mode. This is only works after the print is started and if the bed or nozzle is still heating up, you may have to click it multiple times for it to stick. This will slow all nozzle movements to 50% at the expense of doubling speed. However, it is a one-click diagnostic step.
I only see the issue on the right side. It gets worse near the corner. You are also having collisions with prior extrusions as the nozzle crosses to the right side. Is it possible the upper right corner peeled up from the bed while printing? Even just 1 mm?
