Adaptive pressure advance is not changing PA for different flow rates #2008

New Issue

MrUnknownDE · 2026-04-05T22:29:06+02:00

MrUnknownDE commented

2026-04-05 22:29:06 +02:00

Originally created by @galaxyman7 on 10/3/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.0

Operating System (OS)

Windows

OS Version

Windows 11 24H2

Additional system information

No response

Printer

QIDI Plus 4

How to reproduce

Load attached file and slice, export gcode. Use notepad to search gcode for "pressure" to see pressure advance changes with flowrate.

Actual results

It stops changing pressure advance after the first few layers despite it slowing down at the top. I even tried slowing the outer wall way down to see if the difference in speeds would trigger a change, and it does cause a pressure advance change between the support and the outer wall, but not the outer wall and infill.

Expected results

For each change in feature it should adjust pressure advance for the final speed of that feature.

Project file & Debug log uploads

0.12mm layer Cylinder.zip

Checklist of files to include

Log file
Project file

Anything else?

Gcode file:

Cylinder_ABS_14m21s.zip

*Originally created by @galaxyman7 on 10/3/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.0 ### Operating System (OS) Windows ### OS Version Windows 11 24H2 ### Additional system information _No response_ ### Printer QIDI Plus 4 ### How to reproduce Load attached file and slice, export gcode. Use notepad to search gcode for "pressure" to see pressure advance changes with flowrate. ### Actual results It stops changing pressure advance after the first few layers despite it slowing down at the top. I even tried slowing the outer wall way down to see if the difference in speeds would trigger a change, and it does cause a pressure advance change between the support and the outer wall, but not the outer wall and infill. ### Expected results For each change in feature it should adjust pressure advance for the final speed of that feature. ### Project file & Debug log uploads [0.12mm layer Cylinder.zip](https://github.com/user-attachments/files/22683372/0.12mm.layer.Cylinder.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? Gcode file: [Cylinder_ABS_14m21s.zip](https://github.com/user-attachments/files/22683387/Cylinder_ABS_14m21s.zip) <img width="908" height="746" alt="Image" src="https://github.com/user-attachments/assets/e207cf4f-0d0b-489a-979b-ba219bef9610" />

MrUnknownDE closed this issue

2026-04-05 22:29:06 +02:00

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Reference: github/OrcaSlicer#2008