winget install --id=RyanAIStudios.ZRSpectrum -e ZR Spectrum is a Windows fork of OrcaSlicer for the WonderMaker ZR Ultra S (a 4-head toolchanger). It is not official OrcaSlicer. Do not use SoftFever or OrcaSlicer.com installers if you want mixed-color features. Corresponding Source for this build is git tag zr-2.4.2.1.
A Windows fork of OrcaSlicer for the WonderMaker ZR Ultra S (a 4-head toolchanger).
Download the Windows app — unzip the folder and run orca-slicer.exe.
This is not official OrcaSlicer. Do not use the OrcaSlicer.com / SoftFever installers if you want the mix features below.
Same familiar slicer (based on Orca 2.4.2), plus mixed-color printing on the Ultra S:
Windows only for now. This is a toolchanger mix workflow, not Bambu AMS.
.zip and unzip itOrcaSlicer folder and double-click orca-slicer.exeIf Windows blocks it, or the window will not open, install WebView2 and the Visual C++ redistributable.
The app you want is on branch base/v2.4.2.
main — that is fork setup, not the slicer you runv2.4.2 — that is the frozen original Orca pin, without ZR Spectrumgit clone --branch base/v2.4.2 --single-branch https://github.com/Ryan-AI-Studios/OrcaSlicer-ZR.git
To build: Visual Studio with Desktop development with C++, CMake 4.x on PATH before Strawberry Perl, then from an x64 Native Tools prompt:
build_release_vs.bat
First build is slow (deps + app). After that, build_release_vs.bat slicer is enough. General compile notes: OrcaSlicer wiki — how to build.
ZR Spectrum includes OrcaSlicer. Wiki, calibration guides, and the wider Orca community still live at orcaslicer.com and OrcaSlicer/OrcaSlicer. Those sites ship plain Orca, not this fork.