Snapmaker Orca FullSpectrum v0.9.9

Local-Z toolchange reduction, prime tower planning, and physical-color geometry fixes.

Quick Overview

Greatly reduces Local-Z toolchanges by batching same-plane work across objects and scheduling Local-Z passes with dependency chains.
Reworks Local-Z prime tower behavior so Local-Z swaps are planned ahead of time instead of using oversized reserve slots.
Fixes Local-Z prime tower correctness issues, including missing plan lookups, final-purge sentinel handling, and empty nominal-toolchange layers.
Fixes classic Local-Z physical-color regions so ordinary physical filament zones stay at nominal layer height instead of inheriting mixed-row micro-heights.
Keeps whole-object Local-Z behavior available, while giving physical-color zones a clean two-pass split instead of arbitrary mixed-row pass heights.

More Detailed Overview

Local-Z Toolchange Scheduling

Groups Local-Z phase-b perimeter work by shared micro-pass across objects, instead of restarting optimization for each object layer.
Adds dependency-chain metadata to Local-Z sublayer plans so independent swatches or mixed regions can be scheduled in a tool-friendly order without violating vertical pass dependencies.
Extends dependency-chain tagging to single-row split intervals, which lets common calibration swatches use the optimized Local-Z scheduler instead of falling back to raw pass order.
Uses the dependency scheduler in both G-code emission and Local-Z wipe-tower preplanning so the tower and object path agree on the same toolchange sequence.
Carries the actual ending Local-Z tool into the nominal layer loop instead of forcing a restore to the pre-pass tool, removing a recurring unnecessary toolchange pattern.
Improves Local-Z island assignment with more robust interior sampling so boundary-starting paths are less likely to be assigned to the wrong island bucket.

Local-Z Prime Tower

Preplans Local-Z wipe-tower swaps as real toolchange events instead of treating them as late, unplanned reserve-slot users.
Replaces the old padded Local-Z reserve-band behavior with exact planned Local-Z tower toolchanges, making the tower denser and less wasteful.
Keeps the old reserve-slot path as a fallback if runtime ever diverges from the preplanned sequence.
Fixes Local-Z tower layers that contain only Local-Z toolchanges and no nominal tower toolchanges.
Fixes final-purge sentinel handling so the tower does not mistake the final unload for a normal planned toolchange.
Makes nominal wipe-tower generation consume exact planned toolchange entries directly, reducing fragile lookup behavior when the current tool state drifts.

Local-Z Geometry Correctness

Fixes classic Local-Z mode so pure physical-filament regions remain in the normal nominal layer instead of being pulled into mixed Local-Z micro-passes.
Fixes overlapping thick/thin layer bands in physical-color zones caused by fixed physical masks inheriting mixed-row variable pass heights.
Keeps Local-Z micro-height splitting focused on actual mixed-filament painted regions in classic mode.
Updates whole-object Local-Z handling so physical-color regions can still participate when requested, but use a clean two-pass half-layer split rather than arbitrary mixed-row heights.
Preserves fixed-color guard behavior around whole-object Local-Z mixed masks so painted mixed regions do not grow into neighboring physical-color caps.

Notes

macOS builds from this fork remain unsigned and not notarized.
Release downloads for this fork are available here: https://github.com/ratdoux/OrcaSlicer-FullSpectrum/releases
Use at your own risk.

Snapmaker Orca FullSpectrum v0.9.8

Local-Z multicolor improvements, duplicate gap-fill cleanup, and mixed-filament workflow fixes.
Based on Snapmaker Orca v2.3.1, with the bundled print-preprocessing Flutter/web resources kept on the newer 2.3.12 line.

Quick Overview

Adds optional whole-object Local-Z support for mixed wall regions instead of limiting Local-Z strictly to painted mixed zones.
Adds an experimental direct multicolor Local-Z solver with carry-over error for 3+ color mixed rows, reducing pair-cadence banding.
Fixes several Local-Z boundary issues so painted colors, fixed-color islands, and whole-object mixed masks cooperate more cleanly.
Fixes a duplicated inner-loop gap-fill regression that could overprint narrow collapsed regions.
Fixes mixed-filament bias-state and print-preprocessing remap issues that required restarting or blocked otherwise valid remaps.

More Detailed Overview

Local-Z Dithering

Restores and relabels the Local-Z lower and upper height bounds in the Others tab so they are clearly presented as Local-Z controls.
Adds as an experimental opt-in, allowing default mixed wall regions to keep Local-Z active outside painted islands.
Adds as an experimental opt-in for 3+ color rows, using direct component allocation with carry-over error across layers instead of collapsing everything into pair cadence first.
Keeps the older pair-based Local-Z path as the default for compatibility, while letting the new direct solver be tested independently.
Fixes several planner/runtime issues around painted zones inside whole-object Local-Z bodies, including lost painted Local-Z treatment, phase resets at zone boundaries, and overlap/regrowth artifacts at fixed-color painted caps.
Improves Local-Z summary text in the mixed-filament panel so the UI reports when the direct multicolor solver is active instead of describing the older pair-cadence model.

Gap Fill And Toolpath Generation

Removes the collapsed infill gap-fill fallback that was appending duplicate gap-fill passes in narrow looped regions.
Resolves the regression where certain capsule-like inner loops could receive a doubled gap-fill contour and get visibly over-squished.
Keeps the safer older path that avoided the duplicate loop in the reproduced meshes.

Mixed-Filament Workflow Fixes

Fixes mixed-filament bias controls getting stuck disabled after loading certain projects and then creating a new project without restarting.
Keeps the mixed-filament project config mirrored back into the sidebar state when presets or projects are reloaded programmatically.
Fixes print-preprocessing filament remap for the newer web dialog by sending file-side nozzle diameter data expected by the 2.3.12 frontend.
Reduces the mismatch between automatic tray selection and manual remap eligibility in the preprocessing flow.

UI Cleanup

Retires the old height-weighted cadence and pointillisme-facing controls from the Others tab while keeping compatibility for older stored configs and projects.
Keeps the Local-Z-related controls that are still in active use visible and synchronized with the current mixed-filament workflow.

Notes

macOS builds from this fork remain unsigned and not notarized.
Release downloads for this fork are available here: https://github.com/ratdoux/OrcaSlicer-FullSpectrum/releases
Use at your own risk.

Snapmaker Orca FullSpectrum v0.9.7

Color-preview unification, print-preprocessing filament matching fixes, and release workflow cleanup.
Compared to .
Based on Snapmaker Orca v2.3.1, with the bundled print-preprocessing Flutter/web resources synced forward to the newer 2.3.12 line.

Quick Overview

Unifies mixed-filament display color computation so generated recipes, cached previews, and editor rows use the same color logic.
Improves preview colors for grouped manual patterns, Local-Z previews, same-layer patterns, and bias-aware pair displays.
Fixes print-preprocessing filament auto-matching so same-type trays can be matched by nearest color again instead of behaving like exact-color-only.
Normalizes file-side filament types more consistently, including support-material IDs, to reduce false preprint type mismatches.
Updates the bundled preprocessing page and release-note lookup flow for cleaner fork releases.

More Detailed Overview

Mixed-Filament Color Consistency

Added a shared mixed-filament display context/helper used by , the mixed-color recipe dialog, and the plater-side previews.
Reworked preview color generation for grouped manual patterns, effective pair ratios, same-layer modes, and Local-Z preview subdivision.
Moved bias-aware apparent-color calculations onto shared helpers so the manager and UI no longer drift apart.
Refreshed mixed-filament row colors from the same physical-color context used when new color-match recipes are created.
Reduced mismatch between newly created mixed filaments, cached previews, and what is shown after reopening or editing rows.

Print Preprocessing Filament Matching

Synced the bundled print-preprocessing resources to the newer 2.3.12 line.
Fixed the preprint matcher so approximate same-type colors like cyan, yellow, and magenta can fall back to the nearest tray color instead of effectively requiring exact color equality.
Relaxed the fallback nozzle check so trays are not skipped just because the file-side nozzle value is absent in the web payload.
Disabled stale Flutter service-worker re-registration in the desktop bootstrap and added cache cleanup in so updated preprocessing pages can replace old cached shells on user machines more reliably.
Bumped the bundled build number so newer repo-shipped resources overwrite older AppData copies on startup.
Carries forward the upstream print-preprocessing fix from the synced Flutter bundle for projects with more than four preset filaments, so excess presets remain selectable in the matching dialog.

Filament Type Normalization

Fixed to use instead of the singular .
Updated to build file-side filament types from and the normalized helper instead of forwarding raw config strings.
Added regression coverage for support-material normalization and ordinary-material passthrough.
Reduces false filament type does not match warnings when the visible UI label looks correct but the underlying raw strings do not.

Workflow And Release Maintenance

Updated the release workflow to prefer before changelog files when assembling release notes.
Carries forward the README warning that some older FullSpectrum projects may not migrate cleanly because mixed-filament serialization has evolved.

Notes

macOS builds from this fork remain unsigned and not notarized.
Release downloads for this fork are available here: https://github.com/ratdoux/OrcaSlicer-FullSpectrum/releases
Use at your own risk.

Snapmaker Orca FullSpectrum v0.9.6

Mixed-filament bias controls, preview updates, and release cleanup.
Based on Snapmaker Orca v2.3.1.

Highlights

Mixed Filament Bias

Added an optional per-pair Bias control for mixed filaments.
Positive bias recesses the second filament in the pair.
Negative bias recesses the first filament in the pair.
Added clamping and signed-bias handling so the slicer and UI use the same safe range.

Mixed Filament Workflow Improvements

Added a print setting to enable or disable mixed-filament bias mode.
Moved the bias control inline with the mixed-filament preview row to keep the editor compact.
Added apparent-color preview feedback so biased pairs can show an estimated shifted mix in the UI.
Simplified the final bias workflow so the control behaves consistently across mixed filament pairs.

Slicing And Preview Fixes

Applied bias through the mixed-filament slicing path so recessed layers affect generated geometry instead of only the editor preview.
Fixed mixed-filament panel refresh behavior when the bias setting is toggled.
Improved preview behavior for biased mixed filaments and reduced mismatches between the row preview and sliced output.
Fixed region handling so recessed mixed-filament space is not immediately refilled by the other component in the common painted path.

Release And Project Maintenance

Bumped the FullSpectrum version to .
Moved older changelogs and release notes into and updated the release workflow to read them from there.
Refreshed the README mixed-filament section to document the Bias feature and added a compatibility warning for older projects.

Tests

Expanded coverage for signed bias, clamping, serialization, and remapping behavior.
Rebuilt .
Rebuilt and re-ran the suite successfully.

Important Notes

Some files created with older FullSpectrum builds may not load or migrate cleanly in newer versions because mixed-filament project data has evolved.
macOS builds from this fork remain unsigned and not notarized.
Use at your own risk.

Snapmaker Orca Full Spectrum v0.9.4

Mixed-filament workflow expansion, Local-Z ordering fixes, and release hardening.
Based on Snapmaker Orca v2.2.4.

Highlights

Multi-Perimeter Mixed Filament Support

Added support for multi-perimeter patterns so mixed-filament layouts can preserve more complex perimeter assignments.
Extended the mixed-filament planning path to carry those patterns through slicing and G-code generation.

Object Color Mapping And Filament Assignment

Improved object-color matching with a more predictable path when new colors are appended.
Simplified appended-color handling so imported object colors map to the intended filament entries more reliably.
Increased the color picker capacity beyond 16 colors for larger multi-color projects.

Mixed Filament Workflow Improvements

Improved mixed-filament UI performance in the object-color workflow.
Added mixed-filament reordering support so custom entries can be reorganized without recreating them.
Updated project/config handling so reordered entries stay consistent across the slicing pipeline.

Local-Z And Tool Ordering

Added Local-Z wipe tower reserve planning and pass ordering updates to keep tool sequencing aligned with Local-Z execution.
Introduced coverage and integration points to improve pass ordering determinism.

Stability And Build Reliability

Added GUI startup profiling hooks to help diagnose initialization cost.
Hardened Bonjour socket cleanup by dropping unusable sockets more aggressively.
Added to MSVC parallel compile options to reduce Windows build contention.

Important Notes

Experimental release with limited printer validation.
macOS builds from this fork are unsigned and not notarized.
Use at your own risk.

Snapmaker Orca Full Spectrum v0.9.3 (Pre-release)

Mixed-filament reliability, Local-Z dithering fixes, and fork-safe CI/CD.
Based on Snapmaker Orca v2.2.4.

Highlights

Local-Z Dithering Fixes

Fixed prime tower degradation during Local-Z dithering by directly switching extruders instead of replaying full tool change templates.
Improved starting component logic for alternating layers so height adjustments are computed from the correct pass sequence.
Updated tooltip to clearly explain variable layer height blending with concrete examples (e.g. a 66/33 blend at 0.12 mm prints as 0.08 mm + 0.04 mm layers).

Stable Mixed Filament Identity

Introduced for mixed filament entries, giving each entry a persistent identity that survives additions, deletions, and reordering.
Custom GCode tool changes now reference filament IDs instead of extruder IDs, preventing misrouted tool changes when mixed filaments are modified.
Stable ID allocation and normalization ensures consistent behavior across project save/load cycles.

Mixed Filament 3MF and GUI Improvements

Added functions to compute physical filament count and maximum supported filament ID from project configuration.
GUI now displays total filament counts including mixed filaments in object list and object table.
Streamlined color assignment and naming for both physical and mixed filaments during initialization.
Canvas colors now refresh immediately when mixed filaments are modified.

ObjColorPanel Filament Mapping

Fixed filament ID assignment during color updates by introducing a mapping mechanism for appended filament IDs.
Improved filament ID resolution in approximate-match and default-strategy code paths.

Network Discovery Stability

Hardened UdpSocket (mDNS/Bonjour) with a socket quarantine mechanism that centralizes error handling for setup, send, and receive operations.
Added a method and flag to prevent operations on broken sockets, fixing crashes on systems where mDNS discovery fails.

Bug Fixes

Fixed summary handling to avoid empty-string edge cases in preview data.
Fixed type to for correct object pasting behavior in the Selection class.
Replaced with across Plater to prevent subtle initialization issues.

Tests

Added unit tests for custom GCode tool change handling with mixed filament configurations.
Added unit tests for stable ID remapping in mixed filament scenarios.

Important Notes

Experimental build with limited testing.
macOS builds from this fork are unsigned and not notarized. macOS Gatekeeper may warn or block the app; use right-click > Open or allow it in System Settings > Privacy & Security.
Use at your own risk.

Credits

FilamentMixer color blending integration is powered by FilamentMixer by justinh-rahb.
Library: https://github.com/justinh-rahb/filament-mixer

Snapmaker Orca Full Spectrum v0.92 (Pre-release)

Mixed-filament stability and workflow release.
Based on Snapmaker Orca v2.2.4.

Highlights

Gradient Behavior Is Now Gradual

Removed the Mixed filament layer cycle setting.
Reworked non-height-weighted gradient math to use gradual integer cadence by ratio (minority side anchors to 1 layer, majority side scales progressively).
This prevents abrupt jumps in layer cadence and makes transitions more predictable.

Mixed Filament Indexing And Mapping Fixes

Fixed mixed-filament row labeling so IDs stay compact after deletions in the Mixed Filaments panel.
Fixed regeneration order so auto-generated/precomputed mixes are appended at the end of existing mixed rows instead of being inserted at the front.
Fixed paint/index remapping when adding physical or virtual filaments so existing painted mixed regions keep their intended virtual filament mapping.
Fixed edge case where the first mixed filament could be temporarily replaced by a newly added physical filament.

Automatic Mixed Filaments Are Editable

Automatic mixed rows can now be expanded and edited through the gradient controls.
Edited auto-origin rows are treated as user-managed entries.
Deleting an edited auto-origin row now keeps that auto pair tombstoned (it will not be regenerated immediately and overwrite user intent).

Gradient Preview Color Fidelity

Updated gradient preview blending to use the FilamentMixer library path for color reproduction.
Preview swatches now better match expected mixed output.

Selective Expansion/Contraction Fix

Updated selective mixed-zone contraction so positive values trim only the outside-facing (visible) boundary band.
Internal/shared boundaries are no longer symmetrically contracted.
Outward expansion behavior remains unchanged.

Also Included (v0.91 Carry-Forward Fixes)

Windows startup/log path handling for non-ASCII usernames (UTF-8-safe path resolution).
Mixed-filament swatch desync/gray-regression fixes in preview rendering.

Internal/Config Changes

Removed mixed_filament_cycle_layers from config/UI wiring.
Extended mixed filament serialized metadata with auto-origin tracking to preserve delete/regenerate intent across reloads.
Added diagnostic logging around mixed-filament remap and selective-indentation application paths.

Important Notes

Experimental build with limited testing.
Some projects may show different gradient cadence behavior due to the removal of explicit layer-cycle control.
Use at your own risk.

Credits

FilamentMixer color blending integration is powered by FilamentMixer by justinh-rahb.
Library: https://github.com/justinh-rahb/filament-mixer

Snapmaker Orca Full Spectrum v0.91 (Pre-release)

Small bugfix release.
Based on Snapmaker Orca v2.2.4.

Bug Fixes

Mixed Filament Preview Color

Fixed pattern mixed-filament swatch color desync in the top-left row icon.
Fixed gray color regression when editing pattern tokens (for example 1/2) in live inline editing.
Unified preview color calculation so row swatch and preview bar use the same FilamentMixer-based blend path.

Windows Startup / Logging Path

Fixed startup failure on some Windows systems where usernames include non-ASCII characters (for example umlauts).
Updated log-folder path resolution to use UTF-8-safe environment handling for LOCALAPPDATA.
Prevents boost::filesystem::create_directories failures for ...\\AppData\\Local\\Snapmaker_Orca\\log caused by path encoding mismatch.

Important Notes

Experimental build with limited testing.
Use at your own risk.

Credits

FilamentMixer color blending integration is powered by FilamentMixer by justinh-rahb.
Library: https://github.com/justinh-rahb/filament-mixer

@xSil3nt

v0.9 Pre-release

EXPERIMENTAL BUILD - LIMITED TESTING
Based on Snapmaker Orca v2.2.4

v0.9 full spectrum pre-release focuses on mixed-filament workflow UX and stability.

What's New in v0.9

Mixed Filaments UI/UX Overhaul (v0.9)

Replaced the blocking mixed-filament popup with an inline expand/retract editor.
Added row hover feedback and click-anywhere row activation for custom mixed filaments.
Added dynamic mixed-filament panel resizing with an expansion cap sized for up to two expanded rows.
Simplified editor flow to Simple mode only (mode selector removed from the inline editor).
Moved gradient selector inline with filament selectors for faster editing.
Reworked filament selectors into compact color swatch pickers with F1/F2/... labels.
Simplified pattern editing:
- removed insert dropdown/button flow,
- kept direct filament buttons for appending pattern tokens.
Moved preview labels into the preview bar itself (Preview + ratio overlay), with outlined text for readability.

Mixed Filaments Behavior and Reliability (v0.9)

Automatic mixed filaments are now read-only in the inline settings editor.
Automatic mixed filaments can now be deleted from the UI.
Added persistent deleted-state storage for mixed filament rows so deleted auto rows stay deleted after refresh/restart.
Excluded deleted rows from enabled/displayed virtual filament mapping.
Improved change propagation so mixed-filament edits correctly mark config/project dirty states.
Addressed mixed-filament editor collapse/refresh stability issues.

Local Z Dithering and Prime Tower Handling (v0.9)

Enhanced Local-Z phase-b tool change handling when wipe/prime tower is enabled.
Added an unplanned Local-Z tool-change path in wipe tower integration to emit proper tool-change/wipe G-code outside the preplanned per-layer sequence.
Enabled Local-Z phase-b execution with wipe tower active (still blocked when wiping overrides are active).
Restored pre-pass extruder state after Local-Z phase-b so subsequent wipe/prime tower planning remains synchronized.
Improved Local-Z + wipe tower diagnostics/fallback logging for troubleshooting.

Dark Mode and Visual Consistency (v0.9)

Added dark-mode-aware styling to mixed-filament rows and inline editor controls.
Fixed dark-mode text contrast for mixed-filament row labels and controls.
Updated gradient/preview border handling for better dark-mode contrast.

Installation

Windows

Download 0.9-alpha_Windows.zip.
Extract to a folder.
Run the executable.

macOS

Download the macOS build (arm64 for Apple Silicon or x86_64 for Intel).
If the release asset is a .zip, unzip it first.
Open the .dmg.
Drag Snapmaker_Orca.app into Applications.
Launch the app from Applications.

Linux (AppImage)

Download 0.9-alpha_Linux.AppImage.
Run chmod +x 0.9-alpha_Linux.AppImage.
Run ./0.9-alpha_Linux.AppImage.

Warning

Use at your own risk.
May produce incorrect G-code in edge cases.
Mixed-filament behavior is still experimental in some scenarios.
This release has had limited real-printer validation.

Features Not Yet Fully Tested

Mixed-filament editor behavior on all platform/theme combinations (Windows/macOS/Linux).
Dark-mode visual consistency across all desktop environments.
Mixed-filament preview/readability with all localization strings and scaling factors.

Known Issues

On-screen color blend preview may not exactly match physical print results.
Some UI spacing/alignment may vary by OS and system font rendering.
Older Linux distributions may fail to run this AppImage due to glibc mismatch.

Credits

FilamentMixer color blending integration is powered by the FilamentMixer library by justinh-rahb.
Library repository: https://github.com/justinh-rahb/filament-mixer.

Welcome @xSil3nt to the team!

Team

@ratdoux
@justinh-rahb
@xSil3nt

PS

MacOS and Linux builds will be available in the following hours

v0.8 Pre-release

EXPERIMENTAL BUILD - LIMITED TESTING
Based on Snapmaker Orca v2.2.4

v0.8 full spectrum pre-release focuses on filament mixer color accuracy and Linux AppImage packaging.

This has had limited testing on the Snapmaker U1 via the community.

What's New in v0.8

Filament Mixer Color Blending (v0.8)

Replaced the legacy RYB blend path with FilamentMixer.
Updated mixed-filament preview/display color computation to use FilamentMixer interpolation.
Improved mixed-filament color consistency for generated combinations.
Retained legacy RYB conversion helpers in code as reference.

Linux AppImage Packaging (new in v0.8)

Added Linux release artifact: Snapmaker_Orca_Linux_V2.2.4.AppImage.
AppImage is now the primary Linux release artifact for end users.
Current Linux build target is x86_64.
Current runtime baseline is glibc 2.38+.
Snapmaker_Orca.tar remains available as an advanced/manual fallback.

Installation

Windows

Download Snapmaker_Orca_FullSpectrumV0.8-alpha-Windows.zip.
Extract to a folder.
Run the executable.

macOS

Download Snapmaker_Orca_FullSpectrumV0.8-alpha-MacOS-arm64.zip.
If the release asset is a .zip, unzip it first.
Open the .dmg.
Drag Snapmaker_Orca.app into Applications.
Launch the app from Applications.

Linux (AppImage)

Download Snapmaker_Orca_FullSpectrumV0.8-alpha-Linux.AppImage.
Run chmod +x Snapmaker_Orca_FullSpectrumV0.8-alpha-Linux.AppImage.
Run ./Snapmaker_Orca_FullSpectrumV0.8-alpha-Linux.AppImage.

Warning

Use at your own risk.
May produce incorrect G-code in edge cases.
Mixed-filament behavior is still experimental in some scenarios.
This release has had limited real-printer validation.

Features Not Yet Fully Tested

Linux AppImage behavior across all desktop environments/distributions.
Mixed-filament visual color matching across different filament brands/materials.

Known Issues

Older Linux distributions may fail to run this AppImage due to glibc mismatch.
Some systems may require libfuse2 for AppImage execution.
On-screen color blend preview may not exactly match physical print results.

Credits

FilamentMixer color blending integration is powered by the FilamentMixer library by justinh-rahb.
Library repository: https://github.com/justinh-rahb/filament-mixer.

Releases: ratdoux/OrcaSlicer-FullSpectrum