OrcaSlicer produces the ugliest solid infill pattern compared to other slicers. #1669

New Issue

MrUnknownDE · 2026-04-05T19:02:06+02:00

MrUnknownDE commented

2026-04-05 19:02:06 +02:00

Originally created by @puffofsmoke on 11/9/2025

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

No response

Printer

It doesn't matter.

How to reproduce

Create a standard primitive cube of 30x30x30.
Paint a seam on the back left corner. A single dot is sufficient with "Seam position" set to "aligned".
Ensure that "Detect Narrow Solid Infill" is enabled.
Slice.
Look at the second solid infill layer.

Actual results

Annoying infill dot created at the corner. In case of a seam close to that place, extra retraction and un-retraction were created plus.

In some cases it create extra movement to make a dot first somewhere and start infill in opposite corner next. Change cube size to 90x30x30 to reproduce

Expected results

Something close to other slicers results.

Project file & Debug log uploads

Cube.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @puffofsmoke on 11/9/2025* ### 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 _No response_ ### Printer It doesn't matter. ### How to reproduce 1. Create a standard primitive cube of 30x30x30. 2. Paint a seam on the back left corner. A single dot is sufficient with "Seam position" set to "aligned". 3. Ensure that "Detect Narrow Solid Infill" is enabled. 4. Slice. 5. Look at the second solid infill layer. ### Actual results <img width="631" height="527" alt="Image" src="https://github.com/user-attachments/assets/8f365bf3-3694-4e67-b9cd-3ac8199b917e" /> Annoying infill dot created at the corner. In case of a seam close to that place, extra retraction and un-retraction were created plus. <img width="656" height="688" alt="Image" src="https://github.com/user-attachments/assets/eed02d93-d13f-43c1-931d-98be7198dc63" /> In some cases it create extra movement to make a dot first somewhere and start infill in opposite corner next. Change cube size to 90x30x30 to reproduce ### Expected results <img width="472" height="467" alt="Image" src="https://github.com/user-attachments/assets/ac900257-de2c-4d3c-8e1c-c583afd6a911" /> Something close to other slicers results. ### Project file & Debug log uploads [Cube.zip](https://github.com/user-attachments/files/23440862/Cube.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#1669