Bed Leveling (Linear) (2024)

FAQs

How do you read a bed level test? ›

After a G29 bed leveling is automatically enabled, but in all other situations you must use M420 S1 to enable bed leveling. It is essential to include the command M420 S1 in the “Start G-code” in your slicer settings. If you have no bed leveling, or if there is no leveling data, then this command is simply ignored.

The primary bed calibration mechanism is the "paper test". It involves placing a regular piece of "copy machine paper" between the printer's bed and nozzle, and then commanding the nozzle to different Z heights until one feels a small amount of friction when pushing the paper back and forth.

Use a Feeler Gauge (or alternate link) to gauge to set the Z offset. With a 0.4mm nozzle it is recommended to gauge 0.25 0.20mm using a 0.4mm First Layer Height. With a 0.6mm nozzle it is recommended to gauge 0.35mm. Doing a Y Axis Roller Adjustment might help with more consistent Bed Leveling.

I do this before every print job. You should always level the bed at working temperature, because it expands with heat.

By default G28 disables bed leveling. Follow with M420 S to turn leveling on. With ENABLE_LEVELING_AFTER_G28 leveling will always be enabled after G28 . With RESTORE_LEVELING_AFTER_G28 leveling is restored to whatever state it was in before G28 .

In the auto level machine, the difference in the stadia hair reading is set at the 1: 100 ratio. i.e. if the reading difference is 1cm, that represents 1m. over the ground. So, to get the measurement over the ground, you have to multiply the difference in the stadia hair readings by 100.

This G code provides for straight line (linear) motion from point to point. Motion can occur in 1 or more axes. You can command a G01 with 3 or more axes All axes will start and finish motion at the same time.

This way you can adjust the gap between the nozzle tip and the glass surface: -0.1mm means the nozzle will be closer to the glass bed, +0.1mm means it will be further away from the bed. Typical you adjust only 0.05mm to maximum 0.2mm.

Unfortunately, there isn't one specific measurement that can be applied to any and all printers, most users aim for between 0.06-0.2 mm, with 0.1 mm being a good starting point. The Ender 3s don't have an auto-leveling feature, so you have to level the bed manually.

What is the magic number on Ender 3? ›

These magic numbers are essentially the layer heights that work best on a particular printer. For the Ender 3 models, the magic numbers are in increments of 0.04 mm (e.g., 0.08, 0.12, 0.16, 0.20, 0.24 mm). Simply put, this is because the Z-axis stepper motor on the Ender 3 will raise the hot end 0.04 mm per step.

Here are a few common signs of an unlevel bed: Filament doesn't stick to the build surface in certain areas. Filament doesn't leave the nozzle in some places. The filament's height and width vary across the build surface.

Unified Bed Leveling (UBL) - similar to bilinear leveling except it adds various tools such as matrix editing to fine-tune the probing results. Another great feature is you can save multiple meshes if you have different build plates you use.

Bed Leveler 5000 provides a simple method for paper and feeler gauge-free manual FDB bed leveling. No firmware, setting, configuration, or hardware changes are required to use Bed Leveler 5000.

In this case, the definition of bed level is related to the velocity profile and it is located by extending the velocity profiles below the lowest velocity reading to reach zero velocity as indicated in Figure 1.

The term “bed level” is widely used in the industry to refer to different settling phases in the thickener (figure 1). Some people use this term to describe the mud level, others use it to refer to the interface level or layer.