As we can see above,If the bed and filament do not adhere well together , filament is likely not to be fixed in its position, but pulled away by the nozzle and change position, resulting in confusion.
It is very important that the first layer of the 3d print is tightly glued to the platform, because the next layers are built on top of the first layer, and if the first layer is not glued firmly, this will lead to many problems.
If there is a problem, we can try the following methods in turn.
If the first layer is printed too fast, the amount of material in the first layer may not be enough to stick firmly to the platform, we can try to solve this problem by reducing the speed of the first layer.
If the temperature is not set properly, it may cause the temperature of the printed parts to change too much, resulting in the object deforming drastically and coming off the board.
We can try to solve this problem in the following way.
There are some recommended nozzle temperature settings for common filament.
There are some recommended bed temperature settings for common filament.
Wrong z-axis offset can also lead to errors, which we can modify in the places indicated in the figure below.