The high speed of the outer walls disables arc fitting #430

New Issue

MrUnknownDE · 2026-04-05T16:20:51+02:00

MrUnknownDE commented

2026-04-05 16:20:51 +02:00

Originally created by @annatrubitcyna on 3/6/2026

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

Windows 10

Additional system information

No response

Printer

self-made

How to reproduce

You can see that at a speed of 40 mm/s, the outer arcs on the cube's orc thread are represented in the Gcode as a set of arcs (G3 commands), but if I increase the speed, they are represented as a set of small straight lines (G1 commands). When printing the outer walls at increased speed, the printer stops at sections of the thread arc (represented as many straight lines) and drops appear. My firmware is RRF.
This problem is similar to mine, maybe they have the same reason Issue #7428

Actual results

Expected results

Slicing of elements such as arches, printing without drops

Project file & Debug log uploads

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @annatrubitcyna on 3/6/2026* ### 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 Windows 10 ### Additional system information _No response_ ### Printer self-made ### How to reproduce You can see that at a speed of 40 mm/s, the outer arcs on the cube's orc thread are represented in the Gcode as a set of arcs (G3 commands), but if I increase the speed, they are represented as a set of small straight lines (G1 commands). When printing the outer walls at increased speed, the printer stops at sections of the thread arc (represented as many straight lines) and drops appear. My firmware is RRF. This problem is similar to mine, maybe they have the same reason [Issue #7428](https://github.com/OrcaSlicer/OrcaSlicer/issues/7428) ### Actual results <img width="1666" height="632" alt="Image" src="https://github.com/user-attachments/assets/493d3bdc-9c9a-4765-80e7-a00d259dbc27" /> <img width="1670" height="633" alt="Image" src="https://github.com/user-attachments/assets/55c75103-4817-4270-b1ee-899cec7e5330" /> ### Expected results Slicing of elements such as arches, printing without drops ### Project file & Debug log uploads - ### Checklist of files to include - [ ] Log file - [ ] Project file ### Anything else? _No response_

MrUnknownDE closed this issue

2026-04-05 16:20:51 +02:00

MrUnknownDE added the duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate duplicate labels 2026-04-05 16:20:52 +02:00

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Reference: github/OrcaSlicer#430