Ender 3 v2 Neo bed leveling issues | 3D Printing | Page 1

lethal novaBOT Mar 28, 2024, 1:35 PM

#

AI Help

It sounds like you're already quite familiar with the process of bed leveling and tramming. Since you're using a BLTouch, make sure it is properly calibrated and functioning correctly. If you're consistently having issues with one or two corners being slightly high, you may need to manually adjust the bed leveling screws in those specific areas to fine-tune the leveling.

Additionally, ensure that your initial layer height and nozzle distance are correctly set in your slicer software. You can also try adjusting the Z-offset in your printer settings to ensure the correct nozzle height during printing.

Lastly, make sure your bed surface is clean and free of any debris that could affect the printing process. Good luck with your troubleshooting!

long chasm Mar 28, 2024, 1:40 PM

#

0 1 2 3
0 +0.194 +0.147 +0.157 +0.195
1 +0.023 +0.018 +0.078 +0.169
2 +0.010 -0.003 +0.076 +0.197
3 +0.118 +0.122 +0.197 +0.309

This is the most recent mesh, my gcode creates a new mesh each time and should be saving that mesh and printing with it but again im not seeing any movement in the Z-Rod AT ALL to compensate, on my prints the top left and top right are basically perfect, the middle is suuuuper slightly high in some places on the circle and the bottom left is slightly high

#

About to send photos of my most recent bed level test finishes in about 10 minutes

gusty citrus Mar 28, 2024, 1:47 PM

#

Try replacing M420 S1 with the following:
G29 A; Activate Unified Bed Leveling
G29 L1; Load Mesh from Slot 1
G29 J4; Tilt Mesh

#

Also make sure that you're saving and loading the mesh from the same slot

long chasm Mar 28, 2024, 1:48 PM

#

; Ender 3 Custom Start G-code
G92 E0 ; Reset Extruder
G28 ; Home all axes
G29 A; Activate Unified Bed Leveling
G29 L1; Load Mesh from Slot 1
G29 J4; Tilt Mesh
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position
G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little
G1 X0.4 Y20 Z0.3 F1500.0 E30 ; Draw the second line
G92 E0 ; Reset Extruder
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X5 Y20 Z0.3 F5000.0 ; Move over to prevent blob squish

So this?

long chasm Mar 28, 2024, 1:48 PM

#

gusty citrus Also make sure that you're saving and loading the mesh from the same slot

How can I check which slot im loading and saving?

gusty citrus Mar 28, 2024, 1:49 PM

#

Do you have a mesh settings menu?

#

Is it stock firmware?

long chasm Mar 28, 2024, 1:49 PM

#

Nope using the default marlin ender 3 v2 neo software

#

i did try the mriscoc software but i had issues with it and decided to revert back to the marlin one

#

Had issues with my screen since it was a TJC screen and displaying the mesh numbers even after installing the patch onto the screen

gusty citrus Mar 28, 2024, 1:53 PM

#

long chasm ; Ender 3 Custom Start G-code G92 E0 ; Reset Extruder G28 ; Home all axes G29 A;...

Yes

long chasm Mar 28, 2024, 1:54 PM

#

So it should be moving the z-axis if this is working? like slightly adjusting as it prints?

gusty citrus Mar 28, 2024, 1:56 PM

#

long chasm So it should be moving the z-axis if this is working? like slightly adjusting as...

very very very small movements. Remember that your mesh is in millimeters. The biggest change is 3/10ths of a MM which is tiny

long chasm Mar 28, 2024, 1:57 PM

#

https://i.chillrain.com/index.php/3d-printer-auto-bed-leveling-mesh-visualizer/ I use this to visualise my mesh and just seems like its MASSIVE difference?

ChillRain

henry

3D Printer Auto Bed Leveling Mesh Visualizer

Your can paste the marlin G29 result for example to make it more visual.

long chasm Mar 28, 2024, 1:57 PM

#

gusty citrus very very very small movements. Remember that your mesh is in millimeters. The b...

Right fair enough so maybe seeing it move is pretty hard?

gusty citrus Mar 28, 2024, 1:59 PM

#

It might benefit you to level the bed a little better. You can use the mesh to help you level rather than the paper test. It should be more reliable. The front of the bed should be lowered and then adjust your z-offset

gusty citrus Mar 28, 2024, 2:01 PM

#

long chasm https://i.chillrain.com/index.php/3d-printer-auto-bed-leveling-mesh-visualizer/ ...

Look at the scale for the graph. The top of the graph is 1mm and the bottom is -1mm. It looks like very large difference but they're fairly small

long chasm Mar 28, 2024, 2:02 PM

#

Hmm yeah must be not leveled that well

#

Im not sure of the orientation of the graph to my print but the two squares on the front left and right have printed better than the back right which is extremely low and basically scraping the bed

#

gusty citrus Mar 28, 2024, 2:08 PM

#

On the graph, zoom out. 0,0 will be the origin in the front left corner

long chasm Mar 28, 2024, 2:09 PM

#

#

so my back right and front right are slightly too high so turn those two and make the bed go lower in those corners?

gusty citrus Mar 28, 2024, 2:12 PM

#

Back right and front left i believe

#

nvm im dumb. you were right

#

back right and front right are high

long chasm Mar 28, 2024, 2:14 PM

#

This is gonna be a cat and mouse game i think 😆

#

gusty citrus Mar 28, 2024, 2:15 PM

#

just do your best. it won't be perfect

#

try to get everything under .2 if possible

long chasm Mar 28, 2024, 2:15 PM

#

any ideas which one i should be moving?

#

i moved the front left back left and back right slightly down

gusty citrus Mar 28, 2024, 2:15 PM

#

remember that lowering one corner will raise the opposite one (lowering front left raises back right)

long chasm Mar 28, 2024, 2:15 PM

#

front right is at 0.169

#

ahh right thats... gonna be hard lol

gusty citrus Mar 28, 2024, 2:17 PM

#

Very minor changes are needed. Like 1/8 turns. If possible you can change the mesh to 3x3 to speed up the new mesh process while you tram

long chasm Mar 28, 2024, 2:17 PM

#

yeah default only does 4x4

#

i know on mriscoc it had a dedicated tramming thing which i managed to get each corner 0.0

#

but then i still had issues with z-axis stuff

gusty citrus Mar 28, 2024, 2:22 PM

#

i have mriscoc on mine and i prefer to use the mesh tbh easier to visualize for me

long chasm Mar 28, 2024, 2:22 PM

#

do you have a TJC screen?

#

I couldnt see any of the values it would just been green/red blocks on the bed mesh

gusty citrus Mar 28, 2024, 2:31 PM

#

No but it looks like there is a firmware fix for it https://github.com/mriscoc/Special_Configurations/releases/tag/tjc

GitHub

Release Special support for TJC Displays · mriscoc/Special_Configur...

This special release has support for the TJC displays, including thumbnail preview and fixed mesh viewer fonts for show the leveling values. The Precompiled TJC versions are in the assets section a...

long chasm Mar 28, 2024, 2:31 PM

#

It didn't work for me 😦

gusty citrus Mar 28, 2024, 2:33 PM

#

You used one of the TJC board firmwares and updated the LCD firmware?

long chasm Mar 28, 2024, 2:34 PM

#

Yep It let me boot into the software which is great but still didnt show any of the mesh numbers just colours

gusty citrus Mar 28, 2024, 2:38 PM

#

That's sucks. So annoying that they've introduced a new screen into the mix

long chasm Mar 28, 2024, 2:40 PM

#

Yepppp

#

Really struggling to get this tram done tho 😆

gusty citrus Mar 28, 2024, 2:42 PM

#

is the bed loose at all?

long chasm Mar 28, 2024, 2:42 PM

#

not really it flex's but not like wobbling

gusty citrus Mar 28, 2024, 2:46 PM

#

Might just have some bed warp that you'll have to deal with. Just get it the best you can

long chasm Mar 28, 2024, 2:46 PM

#

I think i was turning the screws the wrong way....

gusty citrus Mar 28, 2024, 2:47 PM

#

I've done that more recently than i care to admit lol

long chasm Mar 28, 2024, 2:48 PM

#

#

This is where im at so far

#

It goes

#

Back Left: 0.201
Back Right: 0.298
Front Left: 0.063
Front Right: 0.226

#

oh wait my b

gusty citrus Mar 28, 2024, 2:50 PM

#

try a 1/8 turn on both high points

long chasm Mar 28, 2024, 2:51 PM

#

just for record

#

to i turn clockwise or anti clockwise lol

gusty citrus Mar 28, 2024, 2:55 PM

#

Turning left should raise the bed and right show lower I believe. You can test by turning one of the wheels a full turn or two and just look if the spring gets more or less compressed. Then do a full reverse turn (or two) to undo it

long chasm Mar 28, 2024, 4:55 PM

#

I think this is as good as ill get it

#

0.0 F LEFT
0.1 F RIGHT
0.3 B LEFT
0.2 B RIGHT

#Ender 3 v2 Neo bed leveling issues