Ender 5 lithophane mystery

[UML]

Hi all
iam facing a problem in printing lithophane always it turns to under extrusion ONLY in one side of the print.
I am using ender 5, calibrated XYZ and E with TLsmoother on XY and E. The machine is very sharp in everything I print like Cal cubes and all torture test's but when it comes to litho It always act stupid with no reason.
Here's some pictures to analyse

*Materialla+
*Noz temp 210
*noz dia 0.4
*line width 0.4,0.38
*Bed tmp 60-50
*Brim
*Printing spd 42
*Retract yes 5
*6 wall -0 infill / 2wall -100% infill / 2wall-99%infill ( tried all this combinations)
*Optimise wall printing order YES
Cura 4.5/4.6/4.7.1 (4.5 gives the better result to compare with other versions but still had the same problem)

Also there's a picture from what does it look like from behind

[Ender5r]

Thanks for the photos -- they always help. But, more details please. When you say "side" what do you mean: the front, the back, 1 end? Perhaps a photo of the entire litho from a few angles?

[UML]

Thank u ender5r
I meant the entire side of the litho front , back surface and body.
Zoom in the top view picture u will see the back wall has dot like extrusion (this thing only happens in one end/side of litho print) (only with litho)

[roon4660]

How are you producing your litho stl file? (Program?-website?) What is your slicer? Have you considered heat creep? https://www.youtube.com/watch?v=azm1c55JOxk This is the best description of heat creep that I have found on the internet.

[UML]

How are you producing your litho stl file? (Program?-website?) What is your slicer? Have you considered heat creep? https://www.youtube.com/watch?v=azm1c55JOxk This is the best description of heat creep that I have found on the internet.

I've been using 4 engine for creating the so (cura 4.7.1, 3drocks, lithophabesnaker and its litho)
then I slice the file using cura (honestly usually it's message me with manifold issue) I used to fix this with mish fixer plug in that available in cura (didn't try the auto desk mish fixed yet).
My cooling fan is original and I did many long prints with no issue at all.

[UML]

By the way, I wasted 2 1kg spools for tons of failed 30% complete for the same litho picture for 2 months.

[Ender5r]

I can say that I have often received the "not manifold" message from Cura. I can also say it doesn't seem to have affected my prints. I can't say it never will but, so far so good.

[roon4660]

What does 'not manifold mean? Is that a problem with the mesh?

[Ender5r]

What does 'not manifold mean? Is that a problem with the mesh?

AFAIK, yes, it indicates some mesh issue. Like I said, it hasn't caused a print problems for me so far.

[roon4660]

Is Mesh Mixer the best program for repairing meshes?

[UML]

Is Mesh Mixer the best program for repairing meshes?

Its been suggested from drvax him self in 2 months earlier video for mesh fixes

[roon4660]

They all seem to repair meshes to a certain extent I just wondered about the best.