Recently (not sure exactly when this started), my printer will start creating really rough surfaces on anything that’s really flat and wide. Tall prints don’t seem to exhibit this issue. The first layer or two seem to go on really smoothly with 0 errors, but as it goes up, the problems increase. For example, I notice a grinding sound as it is printing infill (video included below), presumably because it is bumping against the already laid-down infill. As it begins to print the upper layers, they begin to rise up and get all bumpy, as shown in the photos below.
I’m having now adhesion problems; the part is perfectly stuck to the plate on all four corners when the print is finished.
I’m just using the Standard 0.2mm BambuLab x1C settings, and have printed perfectly fine prints before with those settings.
I’ve seen this also shown in other prints, with the top layer being a bit wavy.
Problem persists even after running a full calibration and power cycling the printer.
I’ve seen it on BambuLab’s basic PLA, with multiple colors.
Since this problem arose randomly without changing settings, I think it may be an issue with the hardware, or perhaps a software update. My guess is that the Z-axis isn’t moving down the proper amount, causing layers to be squished together and subsequently buckle up and get rough. If anyone has any insights as to what could be caused by this, and how to fix it, let me know!
Update: I just printed a calibration both in the spot that I noticed an aberration and in the first layer, but not the last. It was supposed to be 20mm tall but both were 20.3 mm tall.
