--help

Output usage screen and exit

--version

Output the version of Slic3r and exit

--save <file>

Save configuration to the specified file

--load <file>

Load configuration from the specified file. It can be used more than once to load options from multiple files.

-o, --output <file>

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.

--repair

Repair given STL files and save them as <name>_fixed.obj

--cut <z>

Cut given input files at given Z (relative) and export them as <name>_upper.stl and <name>_lower.stl

--split

Split the shells contained in given STL file into several STL files

--info

Output information about the supplied file(s) and exit

-j, --threads <num> Number of threads to use (1+, default: 2)

--no-plater

Disable the plater tab

--gui-mode

Overrides the configured mode (simple/expert)

--autosave <file>

Automatically export current configuration to the specified file

--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.

--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)

--use-volumetric-e

Express E in cubic millimeters and prepend M200 (default: no)

--gcode-arcs

Use G2/G3 commands for native arcs (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)

--pressure-advance

Adjust pressure using the experimental advance algorithm (K constant, set zero to disable; default: 0)

--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)

--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%)

--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)

--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)

--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)

--external-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

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: pillars)

--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)

--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

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

--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)

--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)

--duplicate-grid

Number of items with grid arrangement (default: 1,1)

--duplicate-distance

Distance in mm between copies (default: 0)

--xy-size-compensation

Grow/shrink objects by the configured absolute distance (mm, default: 0)

--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)

--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)

--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)

--solid-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)

--standby-temperature-delta

Temperature difference to be applied when an extruder is not active and --ooze-prevention is enabled (default: -5)