First layer support toolpath still not 100% normal (vs 2.3.0) with 2.3.1 beta #2209

New Issue

MrUnknownDE · 2026-04-06T01:40:01+02:00

MrUnknownDE commented

2026-04-06 01:40:01 +02:00

Originally created by @flint723 on 9/14/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1 beta

Operating System (OS)

Windows

OS Version

Window 11

Additional system information

14th gen intel 14600k cpu
48gb ddr5 ram
Nvidia 3080ti gpu

Printer

Qidi Plus4

How to reproduce

Compare the included project file on 2.3.1 beta with other slicers (2.3.0 orca, qidi studio, bambu) for first layer tree support toolpath.

Actual results

Support first layer toolpath does not always print outer wall first, sometimes prints infill then outer wall. If this is expected I can just close this issue. But it is different from support toolpath behavior in 2.3.0.

Expected results

Should print support outer wall first. It sometimes does but not always, unsure if this is expected or not. Just different from 2.3.0.

Project file & Debug log uploads

LS3+Block+++Spark+Plug+Holder.zip

Checklist of files to include

Log file
Project file

Anything else?

To be honest I'm not really sure why there is an outer wall on support first layer, it could just not have it. If bed adhesion is a thing then the infill could just be slightly larger.

*Originally created by @flint723 on 9/14/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 beta ### Operating System (OS) Windows ### OS Version Window 11 ### Additional system information 14th gen intel 14600k cpu 48gb ddr5 ram Nvidia 3080ti gpu ### Printer Qidi Plus4 ### How to reproduce Compare the included project file on 2.3.1 beta with other slicers (2.3.0 orca, qidi studio, bambu) for first layer tree support toolpath. ### Actual results Support first layer toolpath does not always print outer wall first, sometimes prints infill then outer wall. If this is expected I can just close this issue. But it is different from support toolpath behavior in 2.3.0. ### Expected results Should print support outer wall first. It sometimes does but not always, unsure if this is expected or not. Just different from 2.3.0. ### Project file & Debug log uploads [LS3+Block+++Spark+Plug+Holder.zip](https://github.com/user-attachments/files/22317573/LS3%2BBlock%2B%2B%2BSpark%2BPlug%2BHolder.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? To be honest I'm not really sure why there is an outer wall on support first layer, it could just not have it. If bed adhesion is a thing then the infill could just be slightly larger.

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Reference: github/OrcaSlicer#2209