Klipper does not appear to be using mesh (Ender 3v2n)

Basic Information:

[u] Printer Model: Ender 3v2 Neo
[u] MCU / Printerboard: RPi 4 (MainsailOS) / Creality 4.2.2 GD32F303
[u] klippy.log

klippy.log (345.6 KB)

Describe your issue:

Klipper reports that the bed mesh loaded but in practice the z axis does not move to adjust the height according to the mesh. This leads to uneven prints and makes it impossible to get good adhesion for the first layer. This is after calibrating the probe and generating several meshes to get as close to 0 as possible. I have attached a screenshot of the current mesh as well as a picture (with a z offset of -.2 for demonstration purposes) showing the issue.


Hello @AgentYae !

Have you tried with BED_MESH_PROFILE LOAD="default" after G28 in the macro [gcode_macro START_PRINT]?

I tried that and got more or less the same result. I did put my finger on the side of the Z stepper while it was printing and it felt like it was moving while printing the first layer, so maybe it is loading the mesh? But it doesn’t appear to be adjusting properly because the left side is properly on the plate and the right side is too high to adhere.

I did a lot of testing in another thread(Impossible Bed mesh leveling - Cr10sPro V2) and in the end I found the only way I could get a reliable first layer printer was to run a mesh calibrate(BED_MESH_CALIBRATE PROFILE=) after the G28 for each print. I was seeing similar results as you are when I just loaded the profile. It doesn’t make sense to me but those were the results I saw.

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Thanks for the tip. I tried that but unfortunately I got more or less the same result; good adhesion on the left side and spaghetti on the right.

Doesn’t the CR10 use the sprite extruder? I just upgraded my stock ender extruder to the sprite pro. I wonder if that has anything to do with it, since it was printing great with the old printhead and mesh.

For a few points it makes sense, but not of you have a 8x8 mesh like the OP or a 9x11 like me.

I wasn’t the OP in that thread. I’m using an Ender 3 pro. Assuming you’re using a BLTouch I don’t see how a different extruder would matter. As long as you have your probe z offset adjusted correctly.