Wall Loops number Override Bridge and cause failiure.

[lhndo]

Is there an existing issue for this problem?

• I have searched the existing issues

OrcaSlicer Version

2.0.0

Operating System (OS)

Windows

OS Version

Windows 10

Additional system information

No response

Printer

LH Stinger

How to reproduce

Slice model attached
Look at the bridging on the fan ducts.
The more perimeters you have, the worse it is. Works with only one 😹

Actual results

Perimeters floating instead proper supported bridge lines

Expected results

Internal bridges are anchored properly. Perimeters not printed in air when the bridge can expand to a solid point underneath.

Project file & Debug log uploads

bridge error toolhead.zip

Checklist of files to include

• Log file
• Project file

Anything else?

No response

[lhndo]

Some more examples of perimeters "growing" into the bridge area

With one wall the bridge can actually bridge

[lhndo]

Impossible Cube.zip

Curious if anyone can make a successful bridge layer (independent of model rotation) )when setting the perimeters above 5 on this impossible model.

[discip]

I know it's not a real solution, but as a temporary workaround you could change the Walls printing order to Outer/Inner.

[lhndo]

That could work if would be possible to print perimeters at 90 degrees in the air. The perimeters will still be printed in air with support only on the lateral side. They would also probably not stick since they won't have compression to expand into the adjacent perimeter.

[buzzhuzz]

@lhndo, another workaround may be enabling "Bridge counterbore holes" to either partially bridged or sacrificial layer:

However, this might compromise part strength if your wall is too thin and bridge density (or flow) less than 100% as vertical wall will be fully covered by the bridge layer added:

[lhndo]

@buzzhuzz that's a good trick! I managed to do something similar in SuperSlicer by using custom settings and bridge orientation. That only worked in one direction sadly.


Unfortunately, for me, it doesn't apply in the original case.
The main point for the latter example was to create a simple test case to illustrate the original issue, and maybe help the testing process if anyone has a go at tackling this issue.


In my case I have a dozen variations of this toolhead, which is used for the LH Stinger, and are being printed by other people.

[lhndo]

Another example of the same issue:

tensioner error.zip