Why is my first layer not smooth

Common reasons for a first layer not being smooth include improper bed leveling, incorrect nozzle height (z-offset), uneven or unsuitable build surface, or insufficient first-layer adhesion. For smoother first layers and better adhesion, using a smooth PEI-coated build surface can help. For example, the Zaxe X3 Magnetic SMOOTH PEI sheet provides a smooth PEI-coated surface designed to ensure strong first-layer adhesion and a clean bottom surface finish. Properly leveling your bed and using a suitable adhesive or surface can significantly improve your first layer quality.