After one weekend trying to solve the issue, I summarize below what I’ve done. Hope this would help someone with the same annoying problem.
My model is a box: 20mm x 20mm x 6mm, with a thin wall of 1.5mm.
In the picture below there’s the Bambu plate, with numbers of each box, printed with different parameters:
1 - Default parameters (factrory default parameters for Bambulab X1C with PLA White Matte)
2 - Infill/Wall overlap: -5% (yes, with the minus)
3 - Seam position: back
4 - Order of walls: Outer/Inner
5 - Order of walls: Outer/Inner + Speed outer wall: 100mm/s
6 - Detect thin wall: true
7 - Wall generator: Arachne
Here below the results:
As you can see in the pictures, the best results are number 4 and number 5 (Order of walls: Outer/Inner + Speed outer wall: 100mm/s). The remaining aspects to solve on these were:
- Scraps on the inner wall of the box
- The mark cause by the seam on the back side
For these reasons I also tried other two configurations:
Here the results:
With the number 9 I consider the problem solved (trust me, in the pictures the defects are really exaggerated; with naked eyes, on the number 9 you cannot see any particular defect…and I’m really a fussy person on these things!).
So, to conclude, this is the configuration I will use in the future:
- Quality → Seam position: Back
- Quality → Order of walls: outer/inner
- Speed → Outer wall: 100mm/s
- Speed → Inner wall: 100mm/s
Hope this could help!