Prime line flow/speed too high #385

New Issue

MrUnknownDE · 2026-04-05T16:20:29+02:00

MrUnknownDE commented

2026-04-05 16:20:29 +02:00

Originally created by @mblamauer on 3/9/2026

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.2 RC2

Operating System (OS)

Windows

OS Version

Windows 11

Additional system information

No response

Printer

Bambu Lab P1S

How to reproduce

Open new project
select Bambu Lab P1S
switch to 0.6 nozzle
add model (cube, etc...)
select flow in the gcode viewer
inspect flow of the long section of the prime line

Actual results

flow always exceeds the maximum flow specified in the filament settings
for example:
PLA matte (28mm³/s max volumetric speed) -> prime line flow: 36.12 mm³/s
TPU (4 mm³/s) -> prime line flow: 7.22 mm³/s

Expected results

prime line flow should be capped at max volumetric speed?

Project file & Debug log uploads

Cube.zip

Checklist of files to include

Log file
Project file

Anything else?

*Originally created by @mblamauer on 3/9/2026* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.2 RC2 ### Operating System (OS) Windows ### OS Version Windows 11 ### Additional system information _No response_ ### Printer Bambu Lab P1S ### How to reproduce - Open new project - select Bambu Lab P1S - switch to 0.6 nozzle - add model (cube, etc...) - select flow in the gcode viewer - inspect flow of the long section of the prime line ### Actual results flow always exceeds the maximum flow specified in the filament settings for example: PLA matte (28mm³/s max volumetric speed) -> prime line flow: 36.12 mm³/s TPU (4 mm³/s) -> prime line flow: 7.22 mm³/s ### Expected results prime line flow should be capped at max volumetric speed? ### Project file & Debug log uploads [Cube.zip](https://github.com/user-attachments/files/25845694/Cube.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? <img width="1540" height="933" alt="Image" src="https://github.com/user-attachments/assets/032fce6a-8a57-4ace-9069-2b350a62baef" />

MrUnknownDE closed this issue

2026-04-05 16:20:29 +02:00

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Reference: github/OrcaSlicer#385