Slicer generates Archimedian Chords for top surface pattern in Flow rate calibration despite print profile #1436

New Issue

MrUnknownDE · 2026-04-05T17:45:24+02:00

MrUnknownDE commented

2026-04-05 17:45:24 +02:00

Originally created by @MartynDerg on 12/3/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

1.3.1

Operating System (OS)

Windows

OS Version

23H2

Additional system information

No response

Printer

Voron Trident and Ender 3

How to reproduce

Create new project
Select Calibration > Flow rate, and any option
Ensure monotonic is selected for Strength > Top/bottom shells > Top surface pattern in the print profile
Slice plate

Actual results

The top surfaces of the flow ratio test use archimedian chords as the top surface pattern, despite the setting in the print profile, rendering the test essentially useless as flow behaves differently in the centermost continuous spiral than it does on the edges where there are broken lines, as well as leaving a dot in the center, preventing you from feeling the surface properly.

Expected results

The test should respect the print profile settings, especially the top surface pattern. The test is designed to work with monotonic, but I have not found a way to get it to slice with monotonic top surface pattern at all.

Project file & Debug log uploads

Orca YOLO Flow Calibration.zip

debug_Wed_Dec_03_12_09_40_16260.log.zip

Checklist of files to include

Log file
Project file

Anything else?

*Originally created by @MartynDerg on 12/3/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 1.3.1 ### Operating System (OS) Windows ### OS Version 23H2 ### Additional system information _No response_ ### Printer Voron Trident and Ender 3 ### How to reproduce 1. Create new project 2. Select Calibration > Flow rate, and any option 3. Ensure monotonic is selected for Strength > Top/bottom shells > Top surface pattern in the print profile 4. Slice plate ### Actual results The top surfaces of the flow ratio test use archimedian chords as the top surface pattern, despite the setting in the print profile, rendering the test essentially useless as flow behaves differently in the centermost continuous spiral than it does on the edges where there are broken lines, as well as leaving a dot in the center, preventing you from feeling the surface properly. ### Expected results The test should respect the print profile settings, especially the top surface pattern. The test is designed to work with monotonic, but I have not found a way to get it to slice with monotonic top surface pattern at all. ### Project file & Debug log uploads [Orca YOLO Flow Calibration.zip](https://github.com/user-attachments/files/23893578/Orca.YOLO.Flow.Calibration.zip) [debug_Wed_Dec_03_12_09_40_16260.log.zip](https://github.com/user-attachments/files/23893596/debug_Wed_Dec_03_12_09_40_16260.log.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? <img width="1744" height="1029" alt="Image" src="https://github.com/user-attachments/assets/7ae73667-746b-488c-9a3d-b62fca479324" />

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Reference: github/OrcaSlicer#1436