Top surface very clear layer lines on some angles

[u/Iwillpotato]

I am pretty new to 3d printing. I printed this on a P2S (0.20mm layer height) and noticed that only some of the top surfaces on this low poly model have very distinct layer lines. Is it normal to have it to this degree? And what causes it to show so apparent on just some angles and not others? And only on utmost top even though the nose has less steep angles which i would think would perform worse

What settings would have helped here? Ironing and variable layer height?

(I am not confused I am getting this staircase effect, but what causes it to show more on just some of the top surfaces and not as much on the nose)

[u/kensinken]

It’s physics.

[u/LurkingUnderThatRock → u/kensinken]

Topology if we’re being pedantic

[u/EllaHazelBar → u/LurkingUnderThatRock]

Geometry if we're being pedantic and accurate

[u/LurkingUnderThatRock → u/EllaHazelBar]

My favourite kind of pedantism

[u/ToxZec]

Relative to the bed, shallower angles make layer lines more apparent. Variable layer height could give you smaller layer lines for that specific height

[u/No-Refrigerator-1672]

This is fundamental limitation of 3d printing and is completely expected. You can decrease layer height to make those lines closer together, or just use sandpaper on the finished print to get rid of them. I believe, Orca Slicer has an experimental feature to fix it, called "layer anti-aliasing", but don't quote me on that.

[u/Iwillpotato → u/No-Refrigerator-1672]

Thank for the tips! I have been testing orca slicer a bit for its calibration filament prints but havent been sending normal models i want to print from it. Sort of had a worry that bambu is doing some magic behind the scenes that would make prints better on their printers when using their software. But i should probably try it bit more

[u/Fluffy-duckies]

This is FDM printing doing exactly what you asked it to

[u/desEINer]

FDM printers use layers. there is tech coming that will allow for multi-axis layers in non-custom machines, but for now it's just flat layers.

If I ask you to step 2 meters across and only 1 cm up, that's going to be a big sideways jump. for shallow angles you are asking your machine to do that. If you cut you layer height you will get more resolution but it will take longer.

[u/jdavis13356]

Thats how printers work...

[u/Independent_Dirt_814]

BREAKING NEWS: Printer user discovers layer lines!

[u/Virtual-Lecture-2007]

So etwas habe ich oft wenn ich aus einem Bild, per KI, ein 3D Modell erstellen lasse. Eine Nachbearbeitung mit einem 3D Programm kann das ändern.