OrcaSlicer 2.x: Key New Features and What They Mean for Your Workflow

OrcaSlicer has evolved rapidly since its early releases, establishing itself as one of the most feature-rich and actively developed open-source slicers available. The 2.x release series brought a significant number of improvements that matter to everyday users. Here's a breakdown of the most important changes and how they affect your printing workflow.

Expanded Calibration Suite

OrcaSlicer 2.x significantly expanded the built-in calibration tools, which were already one of its defining features. New additions include:

  • Max Volumetric Speed (MVS) calibration: A practical test that finds the highest extrusion speed your hotend can sustain without under-extrusion. This is especially valuable for high-flow hotend users.
  • Retraction calibration: An automated tower-style test for dialing in retraction length and speed, reducing stringing without manually tweaking values.
  • PA (Pressure Advance) pattern test: Improved test patterns for tuning pressure advance / linear advance, with cleaner visual scoring.

These tools reduce the time needed to qualify a new printer or filament from hours to under an hour for most setups.

Improved Multi-Material (MMU/AMS) Support

Multi-material printing received major attention in 2.x. Key improvements include:

  • Better purge tower optimization — smarter calculation of minimum purge volume to reduce waste.
  • Improved color painting tools for assigning filaments to model regions directly in the slicer viewport.
  • Expanded compatibility with non-Bambu multi-material systems, including Prusa MMU3 and custom ERCF/Tradrack setups running Klipper.

Enhanced Printer Profile Management

Profile management received a much-needed overhaul:

  • Profile import/export: Easier sharing of printer and filament profiles with the community or between machines.
  • Profile inheritance: Child profiles can now inherit from parent profiles, meaning changes to a base profile propagate automatically — reducing maintenance when you have many derived profiles.
  • Expanded printer library: The built-in printer database grew substantially, adding official profiles for more Creality, Bambu, Prusa, Elegoo, Sovol, and community-designed (Voron, Rat Rig) printers.

UI and UX Improvements

The 2.x series brought meaningful usability refinements:

  • Improved dark mode support with better contrast across all panels.
  • Faster 3D viewport rendering for large, complex assemblies.
  • A redesigned object list panel that makes managing multi-part assemblies more intuitive.
  • Better keyboard shortcut coverage, reducing mouse travel for power users.

Networking and Cloud Printing

OrcaSlicer 2.x improved its integration with networked printers:

  • More reliable LAN-mode communication with Bambu Lab printers.
  • Improved Moonraker/Klipper integration for one-click print submission to Klipper-based printers.
  • Better print progress monitoring directly from within the slicer interface.

Staying Up to Date

OrcaSlicer is maintained by an active open-source community, and new releases typically arrive every few weeks to months. The best way to track changes is to:

  1. Watch the OrcaSlicer GitHub repository (SoftFever/OrcaSlicer) for release announcements.
  2. Check the Releases page for detailed changelogs with each version.
  3. Follow community spaces on Reddit (r/orcaslicer, r/3Dprinting) and Discord servers where power users discuss new features as they land.

The pace of development means the slicer you use today may have meaningfully new capabilities within a month or two — keeping it updated is one of the easiest wins available to any OrcaSlicer user.