Fan speed does not respect layer time...not interpolating properly. #2325

New Issue

MrUnknownDE · 2026-04-06T04:07:02+02:00

MrUnknownDE commented

2026-04-06 04:07:02 +02:00

Originally created by @PhilBaz on 8/31/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3

Operating System (OS)

Windows

OS Version

10

Additional system information

AMD poweful

Printer

Voron 2.4 and others

How to reproduce

Set layer time to 7 second (the actual layer time for the cube) fan speed to 10%.

Actual results

Fan speed is over 50%, but should be 10% since the layer time for the object and 'min fan speed / layer time' threshold are the same.

Expected results

Fan speed should be 10% since layer time for the object and 'min fan speed / layer time' threshold are the same.

Project file & Debug log uploads

fan speed layer time disconeted.zip

Checklist of files to include

Log file
Project file

Anything else?

id like to add there also seems to be a problem with

Overhangs and external bridges fan speed

Internal bridges fan speed

Support interface fan speed

They simply don't seem to respect the settings.

*Originally created by @PhilBaz on 8/31/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3 ### Operating System (OS) Windows ### OS Version 10 ### Additional system information AMD poweful ### Printer Voron 2.4 and others ### How to reproduce Set layer time to 7 second (the actual layer time for the cube) fan speed to 10%. ### Actual results Fan speed is over 50%, but should be 10% since the layer time for the object and 'min fan speed / layer time' threshold are the same. ![Image](https://github.com/user-attachments/assets/3c384df0-514c-478b-abbb-769b7be9228f) ![Image](https://github.com/user-attachments/assets/5092949a-f07b-4160-8fc9-c02e088688e4) ### Expected results Fan speed should be 10% since layer time for the object and 'min fan speed / layer time' threshold are the same. ### Project file & Debug log uploads [fan speed layer time disconeted.zip](https://github.com/user-attachments/files/22061982/fan.speed.layer.time.disconeted.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? id like to add there also seems to be a problem with Overhangs and external bridges fan speed Internal bridges fan speed Support interface fan speed They simply don't seem to respect the settings.

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Reference: github/OrcaSlicer#2325