Why is it essential to level the print bed before starting a print?

Leveling the print bed is crucial because it plays a significant role in ensuring proper filament flow and layer adhesion. When the print bed is correctly leveled, the distance between the nozzle and the bed remains consistent across the entire surface. This consistency allows the molten filament to be deposited accurately, ensuring that it adheres well to the bed and to subsequent layers.

If the bed is not level, the nozzle may be too close to some areas and too far from others. This inconsistency can lead to issues such as poor adhesion, excessive squishing of the filament, or gaps in the layers. Proper bed leveling helps maintain an optimal gap, promoting a reliable first layer, which is essential for the overall integrity of the print. In summary, leveling the bed enhances the overall quality and success of the print by facilitating appropriate filament flow and strong layer bonding.