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Major issues with klipper and bed levelling (feddit.dk)

submitted 2 years ago* (last edited 2 years ago) by Grippler@feddit.dk to c/3dprinting@lemmy.world

8 comments fedilink hide all child comments

I recently made the switch from the marlin-based stock firmware on my anycubic kobra 2, to klipper. I didn't have issues with bed levelling or first layer on the stock firmware, but I'm having significant issues running klipper. The bed is uneven, the probed mesh shows a deviation of 0.197mm, it was the same when running stock FW+octoprint.

But it seemed to be correcting just fine for this on the stock FW. I got a consistent decent first layer across the entire bed.

With klipper, it's absolutely impossible to get it to correct for this unevenness. Half the bed will get perfect first layer, but then the second half is either way too squished or hardly connecting to the bed. And it's causing further issues as it's also hitting the print when moving, despite having Z-hop of 0.3mm for travel moves.

What the hell is going on? How do I fix this?

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[–] DrakeRichards@lemmy.world 2 points 2 years ago (2 children)

If you know your deviation, I assume you have a bed probe, right? Are you using your bed mesh? Can you share your start GCode?

[+] Grippler@feddit.dk 2 points 2 years ago* (last edited 6 months ago) (2 children)

[deleted]

[–] ShepherdPie@midwest.social 6 points 2 years ago* (last edited 2 years ago) (1 children)

Looks like you have it set to load the profile "default" instead of "bed60"

Also worth asking, did you have your start gcode set in your slicer previously and if so, did you delete it out of there now that you're using klipper macros?

For me, in Cura, I simply have START_PRINT and END_PRINT in the start/end fields in the Cura settings. Based on your macro title, it would be PRINT_BEGIN and PRINT_END

[–] DrakeRichards@lemmy.world 2 points 2 years ago (1 children)

Could you also post the [bed_mesh] section of printer.cfg?

[+] Grippler@feddit.dk 2 points 2 years ago* (last edited 6 months ago) (1 children)

[deleted]

[–] morbidcactus@lemmy.ca 1 points 2 years ago* (last edited 2 years ago)

What type of probe and what's the config on it?

[probe]
pin: PC14
x_offset: 23
y_offset: 5
#z_offset: 0.10
speed: 20.0
samples: 5 
samples_result: average
sample_retract_dist: 1.0
#samples_tolerance: 0.010
#samples_tolerance_retries: 10

Is what I've got my pinda probe configured with, was playing around with sample tolerances like I have on my printer with a tap probe but I just found the inductive probe has a lot of variation, I added more samples to hopefully average out that error.

[Bed_mesh]
algorithm: bicubic
fade_start: 0.6
fade_end: 10.0
bicubic_tension: 0.2
faulty_region_1_max: 120.0, 74.0 
faulty_region_1_min: 85.0, 45.0 # 103,69
faulty_region_2_max: 125.0, 165
faulty_region_2_min: 70, 110 # 103, 137
horizontal_move_z: 2
mesh_max: 228,210
mesh_min: 24, 6
mesh_pps: 2, 2
probe_count: 5,5
speed: 200

Is my mesh setup, based on a mk3s klipper config. Meshes look a little odd but I ran some bed level prints fine and just ran a full plate of abs with pretty consistent 1st layer.