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_Q: Oh cool, a new RepRap slicer?_
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Slic3r [](https://travis-ci.org/alexrj/Slic3r)
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Slic3r takes 3D models (STL, OBJ, AMF) and converts them into G-code instructions for
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3D printers. It's compatible with any modern printer based on the RepRap toolchain,
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including all those based on the Marlin, Sprinter and Repetier firmware. It also works
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with Mach3 and LinuxCNC controllers.
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See the [project homepage](http://slic3r.org/) at slic3r.org and the
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[manual](http://manual.slic3r.org/) for more information.
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### What language is it written in?
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The core geometric algorithms and data structures are written in C++,
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and Perl is used for high-level flow abstraction, GUI and testing.
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If you're wondering why Perl, see http://xkcd.com/224/
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The C++ API is public and its use in other projects is encouraged.
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The goal is to make Slic3r fully modular so that any part of its logic
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can be used separately.
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### What are Slic3r's main features?
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* **multi-platform** (Linux/Mac/Win) and packaged as standalone-app with no dependencies required
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* complete **command-line interface** to use it with no GUI
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* multi-material **(multiple extruders)** object printing
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* multiple G-code flavors supported (RepRap, Makerbot, Mach3 etc.)
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* ability to plate **multiple objects having distinct print settings**
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* **multithread** processing
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* **STL auto-repair** (tolerance for broken models)
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* wide automated unit testing
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Other major features are:
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* combine infill every 'n' perimeters layer to speed up printing
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* **3D preview** (including multi-material files)
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* **multiple layer heights** in a single print
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* **spiral vase** mode for bumpless vases
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* fine-grained configuration of speed, acceleration, extrusion width
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* several infill patterns including honeycomb, spirals, Hilbert curves
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* support material, raft, brim, skirt
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* **standby temperature** and automatic wiping for multi-extruder printing
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* customizable **G-code macros** and output filename with variable placeholders
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* support for **post-processing scripts**
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* **cooling logic** controlling fan speed and dynamic print speed
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You can just download a precompiled package from [slic3r.org](http://slic3r.org/);
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it will run without the need for any dependency.
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If you want to compile the source yourself just do the following (checkout
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[slic3r.org](http://slic3r.org/download) for more details):
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$ git clone https://github.com/alexrj/Slic3r.git
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$ sudo perl Build.PL --gui
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Sure! Drop me a line at aar@cpan.org. You can also
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find me in #reprap and in #slic3r on FreeNode with the nickname _Sound_.
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Before sending patches and pull requests contact me to discuss your proposed
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changes: this way we'll ensure nobody wastes their time and no conflicts arise
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### What's Slic3r license?
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Slic3r is licensed under the _GNU Affero General Public License, version 3_.
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The author is Alessandro Ranellucci.
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The [Silk icon set](http://www.famfamfam.com/lab/icons/silk/) used in Slic3r is
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licensed under the _Creative Commons Attribution 3.0 License_.
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The author of the Silk icon set is Mark James.
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### How can I invoke slic3r.pl using the command line?
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Usage: slic3r.pl [ OPTIONS ] [ file.stl ] [ file2.stl ] ...
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--help Output this usage screen and exit
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--version Output the version of Slic3r and exit
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--save <file> Save configuration to the specified file
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--load <file> Load configuration from the specified file. It can be used
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more than once to load options from multiple files.
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-o, --output <file> File to output gcode to (by default, the file will be saved
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into the same directory as the input file using the
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--output-filename-format to generate the filename.) If a
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directory is specified for this option, the output will
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be saved under that directory, and the filename will be
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generated by --output-filename-format.
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Non-slicing actions (no G-code will be generated):
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--repair Repair given STL files and save them as <name>_fixed.obj
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--cut <z> Cut given input files at given Z (relative) and export
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them as <name>_upper.stl and <name>_lower.stl
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--info Output information about the supplied file(s) and exit
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-j, --threads <num> Number of threads to use (1+, default: 2)
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--no-plater Disable the plater tab
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--gui-mode Overrides the configured mode (simple/expert)
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--autosave <file> Automatically export current configuration to the specified file
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--output-filename-format
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Output file name format; all config options enclosed in brackets
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will be replaced by their values, as well as [input_filename_base]
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and [input_filename] (default: [input_filename_base].gcode)
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--post-process Generated G-code will be processed with the supplied script;
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call this more than once to process through multiple scripts.
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--export-svg Export a SVG file containing slices instead of G-code.
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-m, --merge If multiple files are supplied, they will be composed into a single
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print rather than processed individually.
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--nozzle-diameter Diameter of nozzle in mm (default: 0.5)
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--print-center Coordinates in mm of the point to center the print around
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--z-offset Additional height in mm to add to vertical coordinates
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--gcode-flavor The type of G-code to generate (reprap/teacup/makerware/sailfish/mach3/no-extrusion,
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--use-relative-e-distances Enable this to get relative E values (default: no)
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--use-firmware-retraction Enable firmware-controlled retraction using G10/G11 (default: no)
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--gcode-arcs Use G2/G3 commands for native arcs (experimental, not supported
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--g0 Use G0 commands for retraction (experimental, not supported by all
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--gcode-comments Make G-code verbose by adding comments (default: no)
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--vibration-limit Limit the frequency of moves on X and Y axes (Hz, set zero to disable;
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--filament-diameter Diameter in mm of your raw filament (default: 3)
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--extrusion-multiplier
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Change this to alter the amount of plastic extruded. There should be
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very little need to change this value, which is only useful to
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compensate for filament packing (default: 1)
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--temperature Extrusion temperature in degree Celsius, set 0 to disable (default: 200)
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--first-layer-temperature Extrusion temperature for the first layer, in degree Celsius,
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set 0 to disable (default: same as --temperature)
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--bed-temperature Heated bed temperature in degree Celsius, set 0 to disable (default: 0)
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--first-layer-bed-temperature Heated bed temperature for the first layer, in degree Celsius,
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set 0 to disable (default: same as --bed-temperature)
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--travel-speed Speed of non-print moves in mm/s (default: 130)
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--perimeter-speed Speed of print moves for perimeters in mm/s (default: 30)
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--small-perimeter-speed
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Speed of print moves for small perimeters in mm/s or % over perimeter speed
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--external-perimeter-speed
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Speed of print moves for the external perimeter in mm/s or % over perimeter speed
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--infill-speed Speed of print moves in mm/s (default: 60)
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--solid-infill-speed Speed of print moves for solid surfaces in mm/s or % over infill speed
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--top-solid-infill-speed Speed of print moves for top surfaces in mm/s or % over solid infill speed
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--support-material-speed
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Speed of support material print moves in mm/s (default: 60)
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--support-material-interface-speed
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Speed of support material interface print moves in mm/s or % over support material
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speed (default: 100%)
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--bridge-speed Speed of bridge print moves in mm/s (default: 60)
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--gap-fill-speed Speed of gap fill print moves in mm/s (default: 20)
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--first-layer-speed Speed of print moves for bottom layer, expressed either as an absolute
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value or as a percentage over normal speeds (default: 30%)
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Acceleration options:
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--perimeter-acceleration
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Overrides firmware's default acceleration for perimeters. (mm/s^2, set zero
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to disable; default: 0)
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--infill-acceleration
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Overrides firmware's default acceleration for infill. (mm/s^2, set zero
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to disable; default: 0)
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--bridge-acceleration
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Overrides firmware's default acceleration for bridges. (mm/s^2, set zero
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to disable; default: 0)
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--first-layer-acceleration
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Overrides firmware's default acceleration for first layer. (mm/s^2, set zero
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to disable; default: 0)
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--default-acceleration
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Acceleration will be reset to this value after the specific settings above
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have been applied. (mm/s^2, set zero to disable; default: 130)
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--layer-height Layer height in mm (default: 0.4)
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--first-layer-height Layer height for first layer (mm or %, default: 0.35)
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--infill-every-layers
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Infill every N layers (default: 1)
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--solid-infill-every-layers
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Force a solid layer every N layers (default: 0)
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--perimeters Number of perimeters/horizontal skins (range: 0+, default: 3)
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--top-solid-layers Number of solid layers to do for top surfaces (range: 0+, default: 3)
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--bottom-solid-layers Number of solid layers to do for bottom surfaces (range: 0+, default: 3)
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--solid-layers Shortcut for setting the two options above at once
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--fill-density Infill density (range: 0%-100%, default: 40%)
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--fill-angle Infill angle in degrees (range: 0-90, default: 45)
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--fill-pattern Pattern to use to fill non-solid layers (default: honeycomb)
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--solid-fill-pattern Pattern to use to fill solid layers (default: rectilinear)
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--start-gcode Load initial G-code from the supplied file. This will overwrite
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the default command (home all axes [G28]).
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--end-gcode Load final G-code from the supplied file. This will overwrite
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the default commands (turn off temperature [M104 S0],
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home X axis [G28 X], disable motors [M84]).
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--layer-gcode Load layer-change G-code from the supplied file (default: nothing).
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--toolchange-gcode Load tool-change G-code from the supplied file (default: nothing).
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--seam-position Position of loop starting points (random/nearest/aligned, default: aligned).
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--external-perimeters-first Reverse perimeter order. (default: no)
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--spiral-vase Experimental option to raise Z gradually when printing single-walled vases
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--only-retract-when-crossing-perimeters
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Disable retraction when travelling between infill paths inside the same island.
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--solid-infill-below-area
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Force solid infill when a region has a smaller area than this threshold
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--infill-only-where-needed
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Only infill under ceilings (default: no)
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--infill-first Make infill before perimeters (default: no)
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Quality options (slower slicing):
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--extra-perimeters Add more perimeters when needed (default: yes)
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--avoid-crossing-perimeters Optimize travel moves so that no perimeters are crossed (default: no)
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--thin-walls Detect single-width walls (default: yes)
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--overhangs Experimental option to use bridge flow, speed and fan for overhangs
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Support material options:
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--support-material Generate support material for overhangs
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--support-material-threshold
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Overhang threshold angle (range: 0-90, set 0 for automatic detection,
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--support-material-pattern
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Pattern to use for support material (default: honeycomb)
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--support-material-spacing
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Spacing between pattern lines (mm, default: 2.5)
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--support-material-angle
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Support material angle in degrees (range: 0-90, default: 0)
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--support-material-interface-layers
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Number of perpendicular layers between support material and object (0+, default: 3)
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--support-material-interface-spacing
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Spacing between interface pattern lines (mm, set 0 to get a solid layer, default: 0)
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--raft-layers Number of layers to raise the printed objects by (range: 0+, default: 0)
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--support-material-enforce-layers
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Enforce support material on the specified number of layers from bottom,
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regardless of --support-material and threshold (0+, default: 0)
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--dont-support-bridges
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Experimental option for preventing support material from being generated under bridged areas (default: yes)
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--retract-length Length of retraction in mm when pausing extrusion (default: 1)
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--retract-speed Speed for retraction in mm/s (default: 30)
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--retract-restart-extra
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Additional amount of filament in mm to push after
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compensating retraction (default: 0)
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--retract-before-travel
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Only retract before travel moves of this length in mm (default: 2)
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--retract-lift Lift Z by the given distance in mm when retracting (default: 0)
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--retract-layer-change
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Enforce a retraction before each Z move (default: yes)
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--wipe Wipe the nozzle while doing a retraction (default: no)
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Retraction options for multi-extruder setups:
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--retract-length-toolchange
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Length of retraction in mm when disabling tool (default: 1)
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--retract-restart-extra-toolchnage
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Additional amount of filament in mm to push after
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switching tool (default: 0)
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--cooling Enable fan and cooling control
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--min-fan-speed Minimum fan speed (default: 35%)
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--max-fan-speed Maximum fan speed (default: 100%)
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--bridge-fan-speed Fan speed to use when bridging (default: 100%)
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--fan-below-layer-time Enable fan if layer print time is below this approximate number
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of seconds (default: 60)
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--slowdown-below-layer-time Slow down if layer print time is below this approximate number
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of seconds (default: 30)
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--min-print-speed Minimum print speed (mm/s, default: 10)
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--disable-fan-first-layers Disable fan for the first N layers (default: 1)
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--fan-always-on Keep fan always on at min fan speed, even for layers that don't need
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--skirts Number of skirts to draw (0+, default: 1)
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--skirt-distance Distance in mm between innermost skirt and object
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--skirt-height Height of skirts to draw (expressed in layers, 0+, default: 1)
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--min-skirt-length Generate no less than the number of loops required to consume this length
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of filament on the first layer, for each extruder (mm, 0+, default: 0)
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--brim-width Width of the brim that will get added to each object to help adhesion
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--scale Factor for scaling input object (default: 1)
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--rotate Rotation angle in degrees (0-360, default: 0)
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--duplicate Number of items with auto-arrange (1+, default: 1)
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--bed-size Bed size, only used for auto-arrange (mm, default: 200,200)
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--duplicate-grid Number of items with grid arrangement (default: 1,1)
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--duplicate-distance Distance in mm between copies (default: 6)
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Sequential printing options:
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--complete-objects When printing multiple objects and/or copies, complete each one before
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starting the next one; watch out for extruder collisions (default: no)
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--extruder-clearance-radius Radius in mm above which extruder won't collide with anything
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--extruder-clearance-height Maximum vertical extruder depth; i.e. vertical distance from
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extruder tip and carriage bottom (default: 20)
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Miscellaneous options:
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--notes Notes to be added as comments to the output file
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--resolution Minimum detail resolution (mm, set zero for full resolution, default: 0)
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Flow options (advanced):
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--extrusion-width Set extrusion width manually; it accepts either an absolute value in mm
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(like 0.65) or a percentage over layer height (like 200%)
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--first-layer-extrusion-width
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Set a different extrusion width for first layer
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--perimeter-extrusion-width
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Set a different extrusion width for perimeters
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--infill-extrusion-width
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Set a different extrusion width for infill
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--solid-infill-extrusion-width
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Set a different extrusion width for solid infill
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--top-infill-extrusion-width
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Set a different extrusion width for top infill
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--support-material-extrusion-width
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Set a different extrusion width for support material
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--bridge-flow-ratio Multiplier for extrusion when bridging (> 0, default: 1)
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Multiple extruder options:
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--extruder-offset Offset of each extruder, if firmware doesn't handle the displacement
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(can be specified multiple times, default: 0x0)
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Extruder to use for perimeters (1+, default: 1)
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--infill-extruder Extruder to use for infill (1+, default: 1)
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--support-material-extruder
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Extruder to use for support material (1+, default: 1)
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--support-material-interface-extruder
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Extruder to use for support material interface (1+, default: 1)
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--ooze-prevention Drop temperature and park extruders outside a full skirt for automatic wiping
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--ooze-prevention Drop temperature and park extruders outside a full skirt for automatic wiping
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--standby-temperature-delta
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Temperature difference to be applied when an extruder is not active and
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--ooze-prevention is enabled (default: -5)
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If you want to change a preset file, just do
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slic3r.pl --load config.ini --layer-height 0.25 --save config.ini
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If you want to slice a file overriding an option contained in your preset file:
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slic3r.pl --load config.ini --layer-height 0.25 file.stl
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README.md
