Cannot get my first layer flat | 3D Printing | Page 1

bitter torrent Jan 22, 2026, 12:15 AM

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I’ve tried higher temp, higher flow, higher bed temp, leveling the bed (Manual, Screw Tilt, and auto bed level), adaptive mesh, washing the build plate with soap and water, alcohol.

It’s like the middle is fine, but right side is just too low, despite my mesh being decent.

Printer is an Elegoo Neptune 4 Plus

tender vortexBOT Jan 22, 2026, 12:15 AM

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bitter torrent I’ve tried higher temp, higher flow, higher bed temp, leveling the bed (Manual, ...

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AI Help

It sounds like you've already tried multiple troubleshooting steps to address the leveling issue on your Elegoo Neptune 4 Plus. Since you've tried various methods and still facing the problem, it might be beneficial to check if there are any mechanical issues causing the uneven printing, such as a loose belt or maybe an issue with the nozzle or bed leveling sensor. You could also try upgrading the firmware of the printer if there's an update available, as sometimes this can help resolve such issues. If the problems persist, reaching out to Elegoo's customer support might be the next best step for professional assistance.

bitter torrent Jan 22, 2026, 12:16 AM

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Using Orcaslicer. Tried multiple layer heights for first layer. Minimal change.

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sand coral Jan 22, 2026, 12:20 AM

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bitter torrent Using Orcaslicer. Tried multiple layer heights for first layer. Minimal change.

checked x gantry level? probe cant account for that

tender vortexBOT Jan 22, 2026, 12:20 AM

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bitter torrent Jan 22, 2026, 12:20 AM

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sand coral checked x gantry level? probe cant account for that

Yeah. Checked that too. Nice and level.

sand coral Jan 22, 2026, 12:20 AM

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as well might as well double check your loading the mesh in slicer start gcode or start print macro if its calling one

bitter torrent Jan 22, 2026, 12:22 AM

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sand coral as well might as well double check your loading the mesh in slicer start gcode o...

No start print macro, but I’m calling the mesh manually.

Here is my machine start G-Code:
;ELEGOO NEPTUNE 4 PLUS

M220 S100 ;Set the feed speed to 100%

M221 S100 ;Set the flow rate to 100%

M104 S140

M190 S[bed_temperature_initial_layer_single]

G90

G28 ;home

BED_MESH_PROFILE LOAD="11"

G1 Z10 F300

G1 X115 Y0.5 F6000

G1 Z0 F300

M109 S[nozzle_temperature_initial_layer]

G92 E0 ;Reset Extruder

G1 X115 Y0.5 Z0.4 F300 ;Move to start position

G1 X215.0 E30 F400 ;Draw the first line

G1 Z0.6 F120.0 ;Move to side a little

G1 X210 F3000

G92 E0 ;Reset Extruder

sand coral Jan 22, 2026, 12:23 AM

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well do you have a bed mesh named 11?

bitter torrent Jan 22, 2026, 12:23 AM

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Yes. It’s the only one.

sand coral Jan 22, 2026, 12:23 AM

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humm, double checked the z screws turn on the first layer?

bitter torrent Jan 22, 2026, 12:24 AM

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Yeah. It moves so as far as I can tell it’s adjusting at least something.

sand coral Jan 22, 2026, 12:24 AM

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mesh made with bed hot?

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as well any wiggle in hoten or bed?

bitter torrent Jan 22, 2026, 12:25 AM

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Yep. And let it sit for 30 minutes.

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No wiggle on the bed or the hot end that I can tell. Wheels are all tight but not too tight.

sand coral Jan 22, 2026, 12:28 AM

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not sure it matters, or if klipper is sart enough to ignore them, but the 11 shouldnt be in quotes

bitter torrent Jan 22, 2026, 12:29 AM

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I can certainly try. It’s kind of a pain that it never really tells you a mesh loaded when it’s printing.

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Although I’ve also done adaptive bed mesh and that does the same thing.

sand coral Jan 22, 2026, 12:30 AM

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why i like BED_MESH_CALIBRATE over load

bitter torrent Jan 22, 2026, 12:30 AM

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Does that run a full bed mesh?

sand coral Jan 22, 2026, 12:30 AM

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you can add adaptive=1, but yeah probes new every print

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im still running old KAMP so i forget about that section

bitter torrent Jan 22, 2026, 12:32 AM

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It’s just crazy that it started doing this in the last month. I’ve had this thing for 2 years with no issues.

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It does seem to load the mesh as far as I can tell.

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Adaptive=1 doesn’t seem to work. It just did a full bed calibrate instead. But it’s doing it.

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It’s in the Gcode too. Weird.

sand coral Jan 22, 2026, 12:45 AM

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the PRINT_START macro calling anything? could be thats trying to load another mesh

bitter torrent Jan 22, 2026, 12:49 AM

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I don’t think I have a PRINT_START macro I’m aware of.

sand coral Jan 22, 2026, 12:50 AM

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you can see it in the first one, might be in another file, but thats a common macro name

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klipper log?

bitter torrent Jan 22, 2026, 12:50 AM

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I guess this is in my
Print.cfg

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[gcode_macro PRINT_START]
gcode:
SAVE_VARIABLE VARIABLE=was_interrupted VALUE=True
G92 E0
G90
SET_INPUT_SHAPER SHAPER_TYPE=ei
CLEAR_PAUSE
M117 Printing

sand coral Jan 22, 2026, 12:51 AM

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thats kinda a nothing macro

bitter torrent Jan 22, 2026, 12:51 AM

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I don’t think I’m calling it anywhere though.

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Oh the printer is calling it..:weird.

sand coral Jan 22, 2026, 12:52 AM

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klipper can remap anything to do anything, i have no clue what elego did to it

bitter torrent Jan 22, 2026, 12:52 AM

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Yeah. I’m doing another test right now. With a full bed mesh using calibrate.

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See how that looks.

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A bit better, but that left side is still rougher that the rest.

#Cannot get my first layer flat