If the first layer cannot stick to the build plate, the model will definitely fail later on. As the foundation of the model, the first layer is quite important for the success of the print job.
Reason 1: The first layer of your model is too thin.
Solution: Change the value of “First Layer Height”, and it should not be less than 0.2mm.
Reason 2: The build plate has not been leveled.
Each Flashforge printer has an adjustable build plate with three knobs underneath that control the distance between the build plate and nozzle. If the build plate has not been leveled, the first layer will probably cannot stick to the build plate. If the build plate is not leveled, one side may be too close to the nozzle, while the other side is too far away from the nozzle.
Solution: You need to re-level the build plate according to the correct hints. Make sure the build plate has been leveled before starting a print job.
Reason 3: The distance between the nozzle and the build plate is too huge.
Solution: Adjust the knobs under the build plate to make your extruder have a perfect distance away from the build plate — not too far and not too close. For good adhesion to the build plate, you can adjust the distance when the printer is printing the first layer.