Overhangs recognition in speed and fan speed control does not work in vase mode #1921

New Issue

MrUnknownDE · 2026-04-05T21:17:24+02:00

MrUnknownDE commented

2026-04-05 21:17:24 +02:00

Originally created by @arosovic on 10/13/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1.

Operating System (OS)

Windows

OS Version

10

Additional system information

cpu: i5-8365u
gpu: radeon 540x, 2GB
ram: 16GB

Printer

Qidi plus 4, but it is the same with Ender 3 V3 KE

How to reproduce

-create shell like overgang testing model

turn oput in n vase mode
set easily recognisable printing speeds for different overhang percentages
set significantly higher fan speed for overhangs
slice

Actual results

speed determined neither by overhangs % nor by layer time and fan speed do not depend on overhang percentage

Expected results

speed determined by overhang % and speed determined by layer time and fan speed should depend on overhang percentage, as at vase mode of:

Project file & Debug log uploads

github.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @arosovic on 10/13/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1. ### Operating System (OS) Windows ### OS Version 10 ### Additional system information cpu: i5-8365u gpu: radeon 540x, 2GB ram: 16GB ### Printer Qidi plus 4, but it is the same with Ender 3 V3 KE ### How to reproduce -create shell like overgang testing model <img width="835" height="687" alt="Image" src="https://github.com/user-attachments/assets/448ee1f3-a4f6-461e-a51c-6fc2c7f1367a" /> - turn oput in n vase mode <img width="1507" height="540" alt="Image" src="https://github.com/user-attachments/assets/f52a20a4-69be-4073-9f8b-3a5c774e80f7" /> - set easily recognisable printing speeds for different overhang percentages <img width="909" height="316" alt="Image" src="https://github.com/user-attachments/assets/db4f5dea-70ba-47af-9dd4-4f7e6404254f" /> - set significantly higher fan speed for overhangs <img width="512" height="373" alt="Image" src="https://github.com/user-attachments/assets/4115fa78-569f-4dcf-bd9f-57cd67be9d2f" /> - slice <img width="616" height="395" alt="Image" src="https://github.com/user-attachments/assets/d8a0edc7-4f7c-4d90-91f8-eefc963e529e" /> ### Actual results speed determined neither by overhangs % nor by layer time and fan speed do not depend on overhang percentage <img width="616" height="395" alt="Image" src="https://github.com/user-attachments/assets/8f84d48e-d4a1-417a-9584-3d5cf2e9f36a" /> ### Expected results speed determined by overhang % and speed determined by layer time and fan speed should depend on overhang percentage, as at vase mode of: <img width="758" height="323" alt="Image" src="https://github.com/user-attachments/assets/790d48e2-50a0-4214-9348-fbfef80a5608" /> <img width="680" height="299" alt="Image" src="https://github.com/user-attachments/assets/9ddf9c75-eb18-4c17-84cf-cbe9bbb2b0c7" /> ### Project file & Debug log uploads [github.zip](https://github.com/user-attachments/files/22889355/github.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#1921