It turns out that I would like the “Top surface” (in red) to be considered as an “Outer wall” (in orange) to have a much better rendering.
It turns out that by carrying out tests by rotating my part slightly this problem no longer appears (see photo opposite)
Between the 2 images I just rotated in X
This piece was made with Blender and despite several attempts aided by an AI I cannot find.
On bambu studio all the parameters are basic, there are changes but not satisfactory by putting the “Ironing” mode > “Tops surfaces” or by increasing the size of the “Outer wall” in “Quality”
Top surfaces and outer walls are so named because of their positions on the model, relative to the plate. Top surfaces are necessarily horizontal. The visible portion of a wall is made up of layer edges. The only way to change these characteristics of a FDM surface is to rotate the model and put those surfaces in a different position.
If you want smoother curved or sloped surfaces, try other orientations, thinner layers, and/or a smaller nozzle.
My first question to you is: “What is your goal/expectation of the final part”?
I have a gut feeling that you want something that cannot be directly achieved with this type of 3d printing but lets see.
In the meanwhile, ironing is only effective on larger horizontal flat top surfaces and does not work on curved areas.
If staircasing on curved or slanted surfaces is your issue then you have to face the reality that this can only be reduced by lower layer heights, using adaptive layer height on your part and/or using a smaller 0.2mm Nozzle but it can’t be completely eliminated.
Thank you for your response,
The goal is to have a clean finish because when 3D printing this part, irregularities appear precisely in these red areas and not in the rest of my object.
Given your answers this would come from Blender, however my model is clean, so I will try to use an adaptive layer height although I don’t know how it works at the moment.
No I’m not saying it is coming from blender, I’m saying that your general design has features that are difficult to impossible to print to the level that your expectations deem as acceptable.
Btw myself as well as others here cannot mind read your expectations nor can we guess with what your actual problem is without some detailed pictures of your printed part(s) pointing to your problem areas. Also it would be nice if you could post your 3mf project file.
As I suspected that part is definitely not 3D FDM printer friendly, there is not a single truly flat surface to be found and no matter how you twist and turn it you can’t avoid supports and areas with large staircasing surfaces.
Use adaptive layer height with both sliders all the way to the left to make the stair step height lower and/or think about some good old fashioned hand rework with filler, sanding and painting.
