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OrcaSlicer

OrcaSlicer 2.3.1-beta

Official release record for OrcaSlicer 2.3.1-beta, published Sep 14, 2025.

Pre-release6 public packages154,989 recorded GitHub downloads

Official files in this release

Linux · 3 files

  • OrcaSlicer-Linux-flatpak_V2.3.1-beta_aarch64.flatpakARM64 · 120.5 MiB · 5,674 downloads
    ✓ SHA-256 available

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    Expected SHA-256a7a2b0263e7e5bc42cb7d07f605b244169847161026e8a62c28d4ce7f055fd56

    Local verification commands

    Windows PowerShellGet-FileHash -Algorithm SHA256 -LiteralPath '.\OrcaSlicer-Linux-flatpak_V2.3.1-beta_aarch64.flatpak'
    macOS Terminalshasum -a 256 -- 'OrcaSlicer-Linux-flatpak_V2.3.1-beta_aarch64.flatpak'
    Linux terminalsha256sum -- 'OrcaSlicer-Linux-flatpak_V2.3.1-beta_aarch64.flatpak'

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  • OrcaSlicer-Linux-flatpak_V2.3.1-beta_x86_64.flatpakIntel / AMD 64-bit · 124.9 MiB · 8,659 downloads
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    Expected SHA-2565cf409f7b8c1022dda40933fd1fae640b868b1e271c652fbce779d0ab427970a

    Local verification commands

    Windows PowerShellGet-FileHash -Algorithm SHA256 -LiteralPath '.\OrcaSlicer-Linux-flatpak_V2.3.1-beta_x86_64.flatpak'
    macOS Terminalshasum -a 256 -- 'OrcaSlicer-Linux-flatpak_V2.3.1-beta_x86_64.flatpak'
    Linux terminalsha256sum -- 'OrcaSlicer-Linux-flatpak_V2.3.1-beta_x86_64.flatpak'

    The digest is supplied by GitHub for the publisher’s release asset. A matching local result shows that the downloaded bytes match that asset.

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  • OrcaSlicer_Linux_AppImage_Ubuntu2404_V2.3.1-beta.AppImageNot specified in filename · 108.9 MiB · 9,223 downloads
    ✓ SHA-256 available

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    Expected SHA-2566bd20118f22d33e4af5841ed1fe1215d1f55bab2f4428087b56e734733e7dca8

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    Windows PowerShellGet-FileHash -Algorithm SHA256 -LiteralPath '.\OrcaSlicer_Linux_AppImage_Ubuntu2404_V2.3.1-beta.AppImage'
    macOS Terminalshasum -a 256 -- 'OrcaSlicer_Linux_AppImage_Ubuntu2404_V2.3.1-beta.AppImage'
    Linux terminalsha256sum -- 'OrcaSlicer_Linux_AppImage_Ubuntu2404_V2.3.1-beta.AppImage'

    The digest is supplied by GitHub for the publisher’s release asset. A matching local result shows that the downloaded bytes match that asset.

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macOS · 1 files

  • OrcaSlicer_Mac_universal_V2.3.1-beta.dmgUniversal · 194.0 MiB · 15,995 downloads
    ✓ SHA-256 available

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    Expected SHA-25697744a99ef99e5ad21c5c253f4c513ce9571cbec3ece27a41fc7ea4c0df5ee5a

    Local verification commands

    Windows PowerShellGet-FileHash -Algorithm SHA256 -LiteralPath '.\OrcaSlicer_Mac_universal_V2.3.1-beta.dmg'
    macOS Terminalshasum -a 256 -- 'OrcaSlicer_Mac_universal_V2.3.1-beta.dmg'
    Linux terminalsha256sum -- 'OrcaSlicer_Mac_universal_V2.3.1-beta.dmg'

    The digest is supplied by GitHub for the publisher’s release asset. A matching local result shows that the downloaded bytes match that asset.

    SHA-256 verifier →
    Official download ↗

Windows · 2 files

  • OrcaSlicer_Windows_Installer_V2.3.1-beta.exeNot specified in filename · 93.7 MiB · 100,558 downloads
    ✓ SHA-256 available

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    Expected SHA-2567e6288900fab6907d1158d3b18c2a726f1ae35055a8047b62ddf3769e8d4b12d

    Local verification commands

    Windows PowerShellGet-FileHash -Algorithm SHA256 -LiteralPath '.\OrcaSlicer_Windows_Installer_V2.3.1-beta.exe'
    macOS Terminalshasum -a 256 -- 'OrcaSlicer_Windows_Installer_V2.3.1-beta.exe'
    Linux terminalsha256sum -- 'OrcaSlicer_Windows_Installer_V2.3.1-beta.exe'

    The digest is supplied by GitHub for the publisher’s release asset. A matching local result shows that the downloaded bytes match that asset.

    SHA-256 verifier →
    Official download ↗
  • OrcaSlicer_Windows_V2.3.1-beta_portable.zipNot specified in filename · 117.9 MiB · 14,880 downloads
    ✓ SHA-256 available

    Verify this file

    Expected SHA-25606e3aa6170d081c04e54d622ff41338be13adc60236309ae301c314537eb8614

    Local verification commands

    Windows PowerShellGet-FileHash -Algorithm SHA256 -LiteralPath '.\OrcaSlicer_Windows_V2.3.1-beta_portable.zip'
    macOS Terminalshasum -a 256 -- 'OrcaSlicer_Windows_V2.3.1-beta_portable.zip'
    Linux terminalsha256sum -- 'OrcaSlicer_Windows_V2.3.1-beta_portable.zip'

    The digest is supplied by GitHub for the publisher’s release asset. A matching local result shows that the downloaded bytes match that asset.

    SHA-256 verifier →
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Package changes from the previous release

Compared with 2.3.1-alpha, all classified package counts remain unchanged at 6 public files.

Counts are separate views of publisher filenames by platform, processor and format. They are not compatibility or support guarantees.

Release-note preview

A plain-text excerpt from the publisher’s release notes. Open the official release for the complete and current text.

Publisher notes are shown in their original source language. This excerpt is not machine-translated.

What's Changed

This is OrcaSlicer V2.3.1 beta release. It fixes some bugs found in 2.3.1-alpha and adds some new features.

  • Add a new feature that allow user to insert extra solid infills by @SoftFever in github.com/SoftFever/OrcaSlicer/pull/10611 ↗ — Insert extra solid infills at specific layers to add strength at critical points in your print. This feature allows you to strategically reinforce your part without changing the overall sparse infill density.

extra-solid-infill

The pattern supports two formats:

Interval Pattern

  • Simple interval: N - Insert 1 solid layer every N layers, equal to N#1
  • Multiple layers: N#K - Insert K consecutive solid layers every N layers
  • Optional K: N# - Shorthand for N#1

Examples:

Explicit Layer List

Specify exact layer numbers (1-based) using comma-separated values. Each entry may be a single layer N or a range N#K to insert K consecutive solid layers starting at layer N:

[!NOTE]
- Layer numbers are 1-based (first layer is layer 1)
- #K is optional in both interval and explicit list entries (N# equals N#1)
- Solid layers are inserted in addition to the normal sparse infill pattern
[!TIP]
Use this feature to:
- Add strength at stress concentration points
- Reinforce mounting holes or attachment points
- Create internal structure for functional parts
- Add periodic reinforcement for tall prints
- Insert a single solid layer at a specific height by using an explicit list with a leading 0, which will be ignored because layer indices are 1-based. Example: 0,15 inserts a solid layer only at layer 15.
[!WARNING]
Layers that include solid infill can take significantly longer than surrounding layers. This time differential may lead to z-banding-like bulges. Consider adjusting cooling or speeds if you observe artifacts.
  • Refactor infill rotation by @SoftFever in github.com/SoftFever/OrcaSlicer/pull/10587 ↗ — This update enhances the user experience and logic of the infill rotation controls by making "Sparse infill direction" and "Sparse infill rotation template" mutually exclusive to avoid conflicts. When the "Sparse infill rotation template" is active (non-empty), both "Sparse infill direction" and the automatic 90-degree rotation logic for certain patterns (e.g., Line pattern) are automatically disabled for clearer behavior.

Solid infill handling has been improved by removing the solid infill insertion code from the sparse infill rotation template system, as this functionality was misplaced in 2.3.1-alpha. A dedicated option has been added for this feature (see change note above). The previous implementation caused issues where solid infill was incorrectly inserted directly above sparse infill.

The overall infill rotation logic has been refactored for better maintainability and clarity, also resolving a critical regression where auto internal bridge infill direction was not functioning correctly in 2.3.1-alpha (#10469).

  • Improve Fisher koch Infill Precision by @RF47 in github.com/SoftFever/OrcaSlicer/pull/10428 ↗ — Improved curved infill pattern quality by replacing lookup tables with direct trigonometric functions, eliminating grid artifacts and delivering naturally smooth curves with full floating-point precision. This enhancement produces more accurate, visually appealing infill patterns while improving performance. — image

UI & UX

[Profiles]

Official release ↗