Max Volumetric Speed test producing strange results when traveling from left to right. #1721

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MrUnknownDE · 2026-04-05T19:24:51+02:00

MrUnknownDE commented

2026-04-05 19:24:51 +02:00

Originally created by @ajtalbot1 on 11/3/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.0, 2.3.1

Operating System (OS)

Windows

OS Version

Windows 11 Pro

Additional system information

Black Dimond 0.4mm nozzle
HatchBox White PLA
Klipper v0.13.0-265
Octopus 1.1
Nitehawk-36 V1.4
Beacon H bed probe (V2.0.0-23)
Rapido UHF
RatRig Tool Head 1.0

Printer

RatRig VCore 3.2 500

How to reproduce

OrcaSlicer 2.3.1 and used as many default settings as possible
Generic PLA
Windows 11 Pro
Max Volumetric Speed test, speed set to 15-25mm^3/s

Actual results

Interesting pattern, but only effecting moves from left to right.

Expected results

Smooth walls as long as the flow rate can keep up.

Project file & Debug log uploads

SpeedTestStructure_0.2mm_PLA_Generic Klipper Printer_17m9s.zip
printer.cfg.txt

Checklist of files to include

Log file
Project file

Anything else?

When running the max flow calibration in OrcaSlicer, all movement moving from right to left generate a strange pattern. Thinking this was a belt issues I re-ran the max flow test rotating the part +/-45 degrees to specifically test each stepper. But both tests came out correctly, with only small problems when the machine was traveling from right to left.

Thinking it might be a belt issues I re-ran the input shaper calibration in Klipper and got almost identical values to my old EVA-3D head.

I want to blame a mechanical issue, but I cant seem to find any. I tried slicing the max flow calibration model at the same speeds using Idea Maker and PrusaSlicer and the problem does not exist. I then tried OrcaSlicer (2.3.1) on a clean Windows 11 Pro computer and used as many default settings as I could. The issue followed. At this point I am strongly leaning to a software bug.

When tested, if your printer comes out clean, please post your G-Code so I can run it (I know how to edit all the starting g-code so it will run on my machine).

*Originally created by @ajtalbot1 on 11/3/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.0, 2.3.1 ### Operating System (OS) Windows ### OS Version Windows 11 Pro ### Additional system information Black Dimond 0.4mm nozzle HatchBox White PLA Klipper v0.13.0-265 Octopus 1.1 Nitehawk-36 V1.4 Beacon H bed probe (V2.0.0-23) Rapido UHF RatRig Tool Head 1.0 ### Printer RatRig VCore 3.2 500 ### How to reproduce OrcaSlicer 2.3.1 and used as many default settings as possible Generic PLA Windows 11 Pro Max Volumetric Speed test, speed set to 15-25mm^3/s ### Actual results ![Image](https://github.com/user-attachments/assets/7adc7957-4b38-475a-935b-9ff64cd8fd06) Interesting pattern, but only effecting moves from left to right. ### Expected results Smooth walls as long as the flow rate can keep up. ### Project file & Debug log uploads [SpeedTestStructure_0.2mm_PLA_Generic Klipper Printer_17m9s.zip](https://github.com/user-attachments/files/23318216/SpeedTestStructure_0.2mm_PLA_Generic.Klipper.Printer_17m9s.zip) [printer.cfg.txt](https://github.com/user-attachments/files/23318217/printer.cfg.txt) ### Checklist of files to include - [ ] Log file - [ ] Project file ### Anything else? When running the max flow calibration in OrcaSlicer, all movement moving from right to left generate a strange pattern. Thinking this was a belt issues I re-ran the max flow test rotating the part +/-45 degrees to specifically test each stepper. But both tests came out correctly, with only small problems when the machine was traveling from right to left. Thinking it might be a belt issues I re-ran the input shaper calibration in Klipper and got almost identical values to my old EVA-3D head. I want to blame a mechanical issue, but I cant seem to find any. I tried slicing the max flow calibration model at the same speeds using Idea Maker and PrusaSlicer and the problem does not exist. I then tried OrcaSlicer (2.3.1) on a clean Windows 11 Pro computer and used as many default settings as I could. The issue followed. At this point I am strongly leaning to a software bug. When tested, if your printer comes out clean, please post your G-Code so I can run it (I know how to edit all the starting g-code so it will run on my machine).

MrUnknownDE closed this issue

2026-04-05 19:24:51 +02:00

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Reference: github/OrcaSlicer#1721