Holes and gaps in the top layers Increase the number of top solid layers to reach at least 0.5mm thickness.Increase the Infill density percentage to prevent hollows in your print that allows the top layers to sag.Perform Under-extrusion troubleshooting. Related articles Grinding Filament Hotend Cable Positioning Stringing/Oozing Replacing a Thermistor Camera is upside down in the 3D Cloud live view
