Automatic Bed Leveling Failure: 3 Solutions

When using an FDM printer, the printing effect is still not satisfactory even after performing automatic bed leveling. Have you encountered this problem? Failure to level the printing bed means poor print adhesion, print warping, etc., which troubles many users, beginners, and even experienced enthusiasts. Automatic leveling is not working, how should we fix it? After performing automatic leveling multiple times and failing to get the same result, how should we check and fix an uneven print bed? In fact, simply checking the frame and shaft of the machine, then tighten the screws and your problem will be solved! Follow our guide to troubleshooting, here are 3 common problems and solutions for automatic bed leveling failure.


Mastering Automatic Bed Leveling (ABL)

Automatic bed leveling (ABL) is a key feature of FDM 3D printers. It automates the bed leveling process, making it more precise and convenient. Many FDM printers have ABL systems and are loved by users. In most cases, automatic bed leveling can ensure consistency throughout the entire print.

ABL systems often use sensors or probes installed near the printer nozzle. This sensor detects the distance between the nozzle and the bed. The auto-leveling system calibrates the print bed and it checks multiple points on the bed surface so that the distance between the nozzle and the build surface is just right. In this case, it can only guarantee the distance of the nozzle across the build platform (bed). And when the print head is shaking or the x-axis needs to be tightened, you will still get prints with inconsistent tilt after completing the automatic leveling. What do we need to check if the automatic bed leveling fails? The first thing is whether the X-axis is perpendicular to the print bed surface.


Automatic Bed Leveling Failure: How to Fix it

Why do you need to adjust the x-axis to solve 3D printer automatic bed leveling failure? Automatic bed leveling relies on the printer's ability to accurately measure the distance between the nozzle and the print bed at multiple points. When printer axis parts are loose or slippery, it can cause the print head to vibrate and move inconsistently, resulting in inaccurate measurements during the ABL process. During the printing process, it is easy to print an uneven first layer and the material has poor adhesion on the print bed. Neglecting to check and adjust the x-axis is the reason why many users fail to level automatically.

Automatic Bed Leveling Failure: For Printers that Require Maintenance

After multiple uses, it’s not uncommon for various components of a 3D printer to show wear and tear. The printer shaft is one of the key components that may be affected, and it plays a vital role in the precision and accuracy of the printer. If the V-shaped pulley on the shaft is slipping, the bearing pulley is loose, or the belt tensioner is loose, these may have an impact on the automatic bed leveling (ABL), causing automatic bed leveling failure, thus affecting the print quality.

Regular maintenance is crucial for 3D printers. It is recommended to maintain the z-axis screw rod once every 3 months, lubricate it appropriately to ensure smooth printing movement. The x-axis and y-axis guides also require regular lubrication, and it is recommended to maintain them once a month. Loose bearing pulleys need to be tightened during maintenance, and belt tensioners need to be fully tightened. When automatic leveling fails, or there are problems with print quality, checking the machine can help you troubleshoot. For different 3D printer, specific maintenance recommendations can be obtained from the manufacturer and customer support team.


Automatic Bed Leveling Failure: For New 3D Printers

If you are assembling a new 3D printer, we usually recommend that users perform pre-startup checks, such as the print head, build platform, and gantry. For example, it is necessary to check whether the build platform is shaking, adjust and tighten the washers, or tighten the screws. Otherwise, there is a risk that subsequent auto-leveling may fail. Before you finish assembling the 3D printer, make sure the build platform is stable, check if the print head is loose, and tighten the belt tensioners on the x-axis and y-axis. Then perform automatic leveling, and you will get more stable and precise printing quality.


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