Fan speed-up time changes fan gcode in custom 'change filament G-code' #97

New Issue

MrUnknownDE · 2026-04-05T16:18:26+02:00

MrUnknownDE commented

2026-04-05 16:18:26 +02:00

Originally created by @MrMonkey1302 on 3/29/2026

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.4.0-dev

Operating System (OS)

Windows

OS Version

Windows 11

Additional system information

No response

Printer

Bambu A1

How to reproduce

Have custom filament change gcode with custom part fan commands.
Change fan speed-up time (with or without only overhangs enabled)
slice an object with a filament change.

Actual results

The fan commands are moved and changed and not slicing the custom filament change gcode as written.

Expected results

the custom filament change gcode is exact in terms of fan speed and locations within the code when sliced

Project file & Debug log uploads

Cube.zip

Checklist of files to include

Log file
Project file

Anything else?

I've read an auto closed issue back from 2024 that seemed to have the same issue but was never addressed

*Originally created by @MrMonkey1302 on 3/29/2026* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.4.0-dev ### Operating System (OS) Windows ### OS Version Windows 11 ### Additional system information _No response_ ### Printer Bambu A1 ### How to reproduce - Have custom filament change gcode with custom part fan commands. - Change fan speed-up time (with or without only overhangs enabled) - slice an object with a filament change. ### Actual results The fan commands are moved and changed and not slicing the custom filament change gcode as written. ### Expected results the custom filament change gcode is exact in terms of fan speed and locations within the code when sliced ### Project file & Debug log uploads [Cube.zip](https://github.com/user-attachments/files/26327009/Cube.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? I've read an auto closed issue back from 2024 that seemed to have the same issue but was never addressed

MrUnknownDE added the bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug labels 2026-04-05 16:18:26 +02:00

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Reference: github/OrcaSlicer#97