Extra Wall on Alternate NOT correct with COMBINED INFILL #1882

New Issue

MrUnknownDE · 2026-04-05T20:49:23+02:00

MrUnknownDE commented

2026-04-05 20:49:23 +02:00

Originally created by @jefftopp1984 on 10/19/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1

Operating System (OS)

Windows

OS Version

Windows 11

Additional system information

Not relevant

Printer

Not relevant

How to reproduce

The Extra Wall on Alternate function that is supposed to lock the sparse infill anchors between the extra perimeters walls is NOT working correctly when combined infill is on. When printing 0.1mm layers with 0.3mm sparse infill, it should do 3 perimeter layers at the normal amount and print the sparse infill, then do 3 perimeter layers of the extra perimeter and print the sparse infill, then alternate. The alternate extra walls needs to FOLLOW THE COMBINED INFILL. What it's actually doing is printing 3, 4, 3 with sparse infill, then 4, 3, 4 with sparse infill which is causing overlap and not locking the sparse infill between the extra perimeters as it should.

Actual results

See Above

Expected results

See Above

Project file & Debug log uploads

N/A

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @jefftopp1984 on 10/19/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 ### Operating System (OS) Windows ### OS Version Windows 11 ### Additional system information Not relevant ### Printer Not relevant ### How to reproduce The Extra Wall on Alternate function that is supposed to lock the sparse infill anchors between the extra perimeters walls is NOT working correctly when combined infill is on. When printing 0.1mm layers with 0.3mm sparse infill, it should do 3 perimeter layers at the normal amount and print the sparse infill, then do 3 perimeter layers of the extra perimeter and print the sparse infill, then alternate. The alternate extra walls needs to FOLLOW THE COMBINED INFILL. What it's actually doing is printing 3, 4, 3 with sparse infill, then 4, 3, 4 with sparse infill which is causing overlap and not locking the sparse infill between the extra perimeters as it should. ### Actual results See Above ### Expected results See Above ### Project file & Debug log uploads N/A ### Checklist of files to include - [ ] Log file - [ ] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#1882