Layer shifting, in other words, known as layer misalignment, is when the layers of the print are not properly aligned, and the print can be unsightly(mostly a failure). It is a common issue in 3D printing and can be tricky, especially if you are a newbie. This article will walk you through the possible causes of the problem and how to fix it accordingly.
Nozzle setting
(1) The 3D printer nozzle is moving too fast.
To save time, some people are inclined to set the speed of the print job higher than what the driver motor is capable of, causing the tool head to fail to reach the desired position.
Solution: In your slicer software, set the speed at 40 to 60mm/s. Alternatively, you may adjust your speed by turning the knob, if you do not wish to stop your print.
(2) Nozzle deviates from the desired position
This happens when the extruder is traveling from one point to another of the print without the Z axis elevating the tool head. The nozzle then hits the object and is pushed away from its intended position. Because the system is unable to detect the deviation, it will continue with the print job, resulting in layer shifting.
Solution: In the settings, readjust the Z- offset to 0.3mm
Mechanical disorder
Most 3d printers use belts to let the motor control the position of the nozzle. Over time, the belt may stretch, which can impact the tension used to control the nozzle. If the tension becomes too loose, the belt may slip on the pulley, which means the pulley is rotating, but the belt is not moving. If the belt is too tight, this can also cause problems. Tightened belts can create excess friction in the bearings that will prevent the motor from spinning. Ideally, the belt is installed tight enough to prevent slipping, but not too tight to stop the system from rotating.
Solution: manually adjust the belt for proper tension. Regularly check and maintain your 3D printers.
Layer shifting could also occur when the motors fail to spin as a result of not getting enough electrical current; or when the model exceeds the size of the print bed, which causes the nozzle to lose its position at the edges. Finally, make sure there is no external force imposed on your printer, for any level of external force could interfere with the moving of the belts.
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