Supports have artifacts when using multimaterial settings and avoid crossing walls is activated #1259

New Issue

MrUnknownDE · 2026-04-05T17:06:52+02:00

MrUnknownDE commented

2026-04-05 17:06:52 +02:00

Originally created by @JuanR3D on 12/26/2025

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

All

How to reproduce

Upload a part with a supported area.
Enable Avoid crossing walls.
Enable Prime tower.
Set a secondary material for supports (in my case, I use T0 for the main part and T1 for supports).

Actual results

Supports are not generated on all layers, but instead appear on alternating layers.

Expected results

Supports are generated at every layer as normally

Project file & Debug log uploads

test_supports.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @JuanR3D on 12/26/2025* ### 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 All ### How to reproduce Upload a part with a supported area. Enable Avoid crossing walls. Enable Prime tower. Set a secondary material for supports (in my case, I use T0 for the main part and T1 for supports). ### Actual results Supports are not generated on all layers, but instead appear on alternating layers. ### Expected results Supports are generated at every layer as normally ### Project file & Debug log uploads [test_supports.zip](https://github.com/user-attachments/files/24351426/test_supports.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

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Due Date

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Dependencies

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Reference: github/OrcaSlicer#1259