Support interface is significantly improved when interface pattern is rotated 20-30 degrees

[ImagineerNL]

Describe the bug
When slicing for an object that needs support, the support interface can be selected as circular or rectilinear.
Rectilinear is used most of the times due to shape of the objects.
However, the support interface lines will then always be colinear with either some of the wall lines or the top/bottom infill pattern lines.
Even with a solid support interface, this causes bad quality or hard to remove supports (breakaway)

When rotating the object between 20 - 30 degrees (as the top/bottom infill pattern is usually 45 degrees), this will guarantee a better support of the layer above and will guarantee no colinear wall or infill pattern.

Current workaround: Rotate the object
Expected workflow: Be able to define the angle of the support interface.

3mf File for This Bug

Bambu_BASt_Rail_Base_V1.zip

To Reproduce
Steps to reproduce the behavior:
with above example; slice and go to layer24

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
Normal object, rectilinear grid; interface lines (green) colinear with some wall (yellow)

Normal object, concentric support interface; interface lines colinear with all walls

Rotated object; green lines are support interface; no colinear lines and thus better support quality

Desktop (please complete the following information):

• OS: Windows
• Version 1.4.0.18

[psiberfunk]

How is this a bug and not a feature request?

[ImagineerNL]

Probably depends on how you look at it.
If it was a brand new feature, i'd call it a feature request.
If the current feature is creating issues, i'd call it a bug, so thats what i labeled it.

Bambu staff / issue curators are free to (re)label it if needed

[SaltWei]

@MusangKingBambulab Please help to check this issue. Thanks!

[MadMax389]

That does appear to be a feature in Prusa Slicer. Set at 20 deg. Rotates both the support structure and the interface...