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PrusaSlicer 2.9.4 is an open-source 3D model slicing application developed by Prusa Research, evolving through twenty-two released versions since its origin as Slic3r Prusa Edition. The program converts digital 3D models into precise G-code instructions that Original Prusa 3D printers and a wide range of other FFF/SLA machines can execute, making it a central productivity tool in the 3D printing software category. Users import STL, OBJ, AMF or 3MF files, arrange and orient models on a virtual build plate, choose filament or resin profiles, and let the software generate layered toolpaths with customizable parameters for layer height, infill density, support structures, seam position, and ironing. Advanced controls allow variable layer heights, adaptive cubic infill, elephant-foot compensation, and multi-material painting, while built-in preview modes visualize extrusion widths, speeds, retractions, and estimated print times before the job starts. PrusaSlicer supports both Fused Filament Fabrication and Stereolithography workflows, integrates with OctoPrint, PrusaLink, and the Prusa Connect cloud service for direct wireless upload, and provides pre-tested material profiles for Prusament as well as third-party filaments. Frequent community contributions and automated nightly builds keep feature development brisk, addressing everything from organic supports and sequential printing to lightning infill and pressure-advance calibration. The application runs natively on Windows, macOS, and Linux, offers command-line batch processing for farms, and exports thumbnails, notes, and custom G-code macros alongside the final print file. PrusaSlicer 2.9.4 is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.
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