_Q: Oh cool, a new RepRap slicer?_ A: Yes. Slic3r [![Build Status](https://travis-ci.org/alexrj/Slic3r.png?branch=master)](https://travis-ci.org/alexrj/Slic3r) ====== Slic3r takes 3D models (STL, OBJ, AMF) and converts them into G-code instructions for 3D printers. It's compatible with any modern printer based on the RepRap toolchain, including all those based on the Marlin, Sprinter and Repetier firmware. It also works with Mach3 and LinuxCNC controllers. See the [project homepage](http://slic3r.org/) at slic3r.org and the [manual](http://manual.slic3r.org/) for more information. ### What language is it written in? The core geometric algorithms and data structures are written in C++, and Perl is used for high-level flow abstraction, GUI and testing. If you're wondering why Perl, see http://xkcd.com/224/ The C++ API is public and its use in other projects is encouraged. The goal is to make Slic3r fully modular so that any part of its logic can be used separately. ### What are Slic3r's main features? Key features are: * **multi-platform** (Linux/Mac/Win) and packaged as standalone-app with no dependencies required * complete **command-line interface** to use it with no GUI * multi-material **(multiple extruders)** object printing * multiple G-code flavors supported (RepRap, Makerbot, Mach3 etc.) * ability to plate **multiple objects having distinct print settings** * **multithread** processing * **STL auto-repair** (tolerance for broken models) * wide automated unit testing Other major features are: * combine infill every 'n' perimeters layer to speed up printing * **3D preview** (including multi-material files) * **multiple layer heights** in a single print * **spiral vase** mode for bumpless vases * fine-grained configuration of speed, acceleration, extrusion width * several infill patterns including honeycomb, spirals, Hilbert curves * support material, raft, brim, skirt * **standby temperature** and automatic wiping for multi-extruder printing * customizable **G-code macros** and output filename with variable placeholders * support for **post-processing scripts** * **cooling logic** controlling fan speed and dynamic print speed ### How to install? You can just download a precompiled package from [slic3r.org](http://slic3r.org/); it will run without the need for any dependency. If you want to compile the source yourself just do the following (checkout [slic3r.org](http://slic3r.org/download) for more details): ``` $ git clone https://github.com/alexrj/Slic3r.git $ cd Slic3r $ sudo perl Build.PL $ sudo perl Build.PL --gui $ ./slic3r.pl ``` ### Can I help? Sure! Drop me a line at aar@cpan.org. You can also find me in #reprap and in #slic3r on FreeNode with the nickname _Sound_. Before sending patches and pull requests contact me to discuss your proposed changes: this way we'll ensure nobody wastes their time and no conflicts arise in development. ### What's Slic3r license? Slic3r is licensed under the _GNU Affero General Public License, version 3_. The author is Alessandro Ranellucci. The [Silk icon set](http://www.famfamfam.com/lab/icons/silk/) used in Slic3r is licensed under the _Creative Commons Attribution 3.0 License_. The author of the Silk icon set is Mark James. ### How can I invoke slic3r.pl using the command line? Usage: slic3r.pl [ OPTIONS ] [ file.stl ] [ file2.stl ] ... --help Output this usage screen and exit --version Output the version of Slic3r and exit --save Save configuration to the specified file --load Load configuration from the specified file. It can be used more than once to load options from multiple files. -o, --output File to output gcode to (by default, the file will be saved into the same directory as the input file using the --output-filename-format to generate the filename.) If a directory is specified for this option, the output will be saved under that directory, and the filename will be generated by --output-filename-format. Non-slicing actions (no G-code will be generated): --repair Repair given STL files and save them as _fixed.obj --cut Cut given input files at given Z (relative) and export them as _upper.stl and _lower.stl --info Output information about the supplied file(s) and exit -j, --threads Number of threads to use (1+, default: 2) GUI options: --no-plater Disable the plater tab --gui-mode Overrides the configured mode (simple/expert) --autosave Automatically export current configuration to the specified file Output options: --output-filename-format Output file name format; all config options enclosed in brackets will be replaced by their values, as well as [input_filename_base] and [input_filename] (default: [input_filename_base].gcode) --post-process Generated G-code will be processed with the supplied script; call this more than once to process through multiple scripts. --export-svg Export a SVG file containing slices instead of G-code. -m, --merge If multiple files are supplied, they will be composed into a single print rather than processed individually. Printer options: --nozzle-diameter Diameter of nozzle in mm (default: 0.5) --print-center Coordinates in mm of the point to center the print around (default: 100,100) --z-offset Additional height in mm to add to vertical coordinates (+/-, default: 0) --gcode-flavor The type of G-code to generate (reprap/teacup/makerware/sailfish/mach3/no-extrusion, default: reprap) --use-relative-e-distances Enable this to get relative E values (default: no) --use-firmware-retraction Enable firmware-controlled retraction using G10/G11 (default: no) --gcode-arcs Use G2/G3 commands for native arcs (experimental, not supported by all firmwares) --g0 Use G0 commands for retraction (experimental, not supported by all firmwares) --gcode-comments Make G-code verbose by adding comments (default: no) --vibration-limit Limit the frequency of moves on X and Y axes (Hz, set zero to disable; default: 0) Filament options: --filament-diameter Diameter in mm of your raw filament (default: 3) --extrusion-multiplier Change this to alter the amount of plastic extruded. There should be very little need to change this value, which is only useful to compensate for filament packing (default: 1) --temperature Extrusion temperature in degree Celsius, set 0 to disable (default: 200) --first-layer-temperature Extrusion temperature for the first layer, in degree Celsius, set 0 to disable (default: same as --temperature) --bed-temperature Heated bed temperature in degree Celsius, set 0 to disable (default: 0) --first-layer-bed-temperature Heated bed temperature for the first layer, in degree Celsius, set 0 to disable (default: same as --bed-temperature) Speed options: --travel-speed Speed of non-print moves in mm/s (default: 130) --perimeter-speed Speed of print moves for perimeters in mm/s (default: 30) --small-perimeter-speed Speed of print moves for small perimeters in mm/s or % over perimeter speed (default: 30) --external-perimeter-speed Speed of print moves for the external perimeter in mm/s or % over perimeter speed (default: 70%) --infill-speed Speed of print moves in mm/s (default: 60) --solid-infill-speed Speed of print moves for solid surfaces in mm/s or % over infill speed (default: 60) --top-solid-infill-speed Speed of print moves for top surfaces in mm/s or % over solid infill speed (default: 50) --support-material-speed Speed of support material print moves in mm/s (default: 60) --support-material-interface-speed Speed of support material interface print moves in mm/s or % over support material speed (default: 100%) --bridge-speed Speed of bridge print moves in mm/s (default: 60) --gap-fill-speed Speed of gap fill print moves in mm/s (default: 20) --first-layer-speed Speed of print moves for bottom layer, expressed either as an absolute value or as a percentage over normal speeds (default: 30%) Acceleration options: --perimeter-acceleration Overrides firmware's default acceleration for perimeters. (mm/s^2, set zero to disable; default: 0) --infill-acceleration Overrides firmware's default acceleration for infill. (mm/s^2, set zero to disable; default: 0) --bridge-acceleration Overrides firmware's default acceleration for bridges. (mm/s^2, set zero to disable; default: 0) --first-layer-acceleration Overrides firmware's default acceleration for first layer. (mm/s^2, set zero to disable; default: 0) --default-acceleration Acceleration will be reset to this value after the specific settings above have been applied. (mm/s^2, set zero to disable; default: 130) Accuracy options: --layer-height Layer height in mm (default: 0.4) --first-layer-height Layer height for first layer (mm or %, default: 0.35) --infill-every-layers Infill every N layers (default: 1) --solid-infill-every-layers Force a solid layer every N layers (default: 0) Print options: --perimeters Number of perimeters/horizontal skins (range: 0+, default: 3) --top-solid-layers Number of solid layers to do for top surfaces (range: 0+, default: 3) --bottom-solid-layers Number of solid layers to do for bottom surfaces (range: 0+, default: 3) --solid-layers Shortcut for setting the two options above at once --fill-density Infill density (range: 0%-100%, default: 40%) --fill-angle Infill angle in degrees (range: 0-90, default: 45) --fill-pattern Pattern to use to fill non-solid layers (default: honeycomb) --solid-fill-pattern Pattern to use to fill solid layers (default: rectilinear) --start-gcode Load initial G-code from the supplied file. This will overwrite the default command (home all axes [G28]). --end-gcode Load final G-code from the supplied file. This will overwrite the default commands (turn off temperature [M104 S0], home X axis [G28 X], disable motors [M84]). --layer-gcode Load layer-change G-code from the supplied file (default: nothing). --toolchange-gcode Load tool-change G-code from the supplied file (default: nothing). --seam-position Position of loop starting points (random/nearest/aligned, default: aligned). --external-perimeters-first Reverse perimeter order. (default: no) --spiral-vase Experimental option to raise Z gradually when printing single-walled vases (default: no) --only-retract-when-crossing-perimeters Disable retraction when travelling between infill paths inside the same island. (default: no) --solid-infill-below-area Force solid infill when a region has a smaller area than this threshold (mm^2, default: 70) --infill-only-where-needed Only infill under ceilings (default: no) --infill-first Make infill before perimeters (default: no) Quality options (slower slicing): --extra-perimeters Add more perimeters when needed (default: yes) --avoid-crossing-perimeters Optimize travel moves so that no perimeters are crossed (default: no) --thin-walls Detect single-width walls (default: yes) --overhangs Experimental option to use bridge flow, speed and fan for overhangs (default: yes) Support material options: --support-material Generate support material for overhangs --support-material-threshold Overhang threshold angle (range: 0-90, set 0 for automatic detection, default: 0) --support-material-pattern Pattern to use for support material (default: honeycomb) --support-material-spacing Spacing between pattern lines (mm, default: 2.5) --support-material-angle Support material angle in degrees (range: 0-90, default: 0) --support-material-interface-layers Number of perpendicular layers between support material and object (0+, default: 3) --support-material-interface-spacing Spacing between interface pattern lines (mm, set 0 to get a solid layer, default: 0) --raft-layers Number of layers to raise the printed objects by (range: 0+, default: 0) --support-material-enforce-layers Enforce support material on the specified number of layers from bottom, regardless of --support-material and threshold (0+, default: 0) --dont-support-bridges Experimental option for preventing support material from being generated under bridged areas (default: yes) Retraction options: --retract-length Length of retraction in mm when pausing extrusion (default: 1) --retract-speed Speed for retraction in mm/s (default: 30) --retract-restart-extra Additional amount of filament in mm to push after compensating retraction (default: 0) --retract-before-travel Only retract before travel moves of this length in mm (default: 2) --retract-lift Lift Z by the given distance in mm when retracting (default: 0) --retract-layer-change Enforce a retraction before each Z move (default: yes) --wipe Wipe the nozzle while doing a retraction (default: no) Retraction options for multi-extruder setups: --retract-length-toolchange Length of retraction in mm when disabling tool (default: 1) --retract-restart-extra-toolchnage Additional amount of filament in mm to push after switching tool (default: 0) Cooling options: --cooling Enable fan and cooling control --min-fan-speed Minimum fan speed (default: 35%) --max-fan-speed Maximum fan speed (default: 100%) --bridge-fan-speed Fan speed to use when bridging (default: 100%) --fan-below-layer-time Enable fan if layer print time is below this approximate number of seconds (default: 60) --slowdown-below-layer-time Slow down if layer print time is below this approximate number of seconds (default: 30) --min-print-speed Minimum print speed (mm/s, default: 10) --disable-fan-first-layers Disable fan for the first N layers (default: 1) --fan-always-on Keep fan always on at min fan speed, even for layers that don't need cooling Skirt options: --skirts Number of skirts to draw (0+, default: 1) --skirt-distance Distance in mm between innermost skirt and object (default: 6) --skirt-height Height of skirts to draw (expressed in layers, 0+, default: 1) --min-skirt-length Generate no less than the number of loops required to consume this length of filament on the first layer, for each extruder (mm, 0+, default: 0) --brim-width Width of the brim that will get added to each object to help adhesion (mm, default: 0) Transform options: --scale Factor for scaling input object (default: 1) --rotate Rotation angle in degrees (0-360, default: 0) --duplicate Number of items with auto-arrange (1+, default: 1) --bed-size Bed size, only used for auto-arrange (mm, default: 200,200) --duplicate-grid Number of items with grid arrangement (default: 1,1) --duplicate-distance Distance in mm between copies (default: 6) --xy-size-compensation Grow/shrink objects by the configured absolute distance (mm, default: 0) Sequential printing options: --complete-objects When printing multiple objects and/or copies, complete each one before starting the next one; watch out for extruder collisions (default: no) --extruder-clearance-radius Radius in mm above which extruder won't collide with anything (default: 20) --extruder-clearance-height Maximum vertical extruder depth; i.e. vertical distance from extruder tip and carriage bottom (default: 20) Miscellaneous options: --notes Notes to be added as comments to the output file --resolution Minimum detail resolution (mm, set zero for full resolution, default: 0) Flow options (advanced): --extrusion-width Set extrusion width manually; it accepts either an absolute value in mm (like 0.65) or a percentage over layer height (like 200%) --first-layer-extrusion-width Set a different extrusion width for first layer --perimeter-extrusion-width Set a different extrusion width for perimeters --external-perimeter-extrusion-width Set a different extrusion width for external perimeters --infill-extrusion-width Set a different extrusion width for infill --solid-infill-extrusion-width Set a different extrusion width for solid infill --top-infill-extrusion-width Set a different extrusion width for top infill --support-material-extrusion-width Set a different extrusion width for support material --bridge-flow-ratio Multiplier for extrusion when bridging (> 0, default: 1) Multiple extruder options: --extruder-offset Offset of each extruder, if firmware doesn't handle the displacement (can be specified multiple times, default: 0x0) --perimeter-extruder Extruder to use for perimeters (1+, default: 1) --infill-extruder Extruder to use for infill (1+, default: 1) --support-material-extruder Extruder to use for support material (1+, default: 1) --support-material-interface-extruder Extruder to use for support material interface (1+, default: 1) --ooze-prevention Drop temperature and park extruders outside a full skirt for automatic wiping (default: no) --ooze-prevention Drop temperature and park extruders outside a full skirt for automatic wiping (default: no) --standby-temperature-delta Temperature difference to be applied when an extruder is not active and --ooze-prevention is enabled (default: -5) If you want to change a preset file, just do slic3r.pl --load config.ini --layer-height 0.25 --save config.ini If you want to slice a file overriding an option contained in your preset file: slic3r.pl --load config.ini --layer-height 0.25 file.stl