Holes and gaps in the top layers May 03, 2022 18:07 Updated 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 Hotend Cable Positioning Extrusion issues Doesn't save or loses calibration values Dev Tools Calibration