command line only options:

--noconfigfile [=arg(=1)] (=0) ignore any configuration file

--config arg (=millproject)

list of comma-separated config files

-? [ --help ]

produce help message

-V [ --version ]

show the current software version

Generic options (CLI and config files):

--ignore-warnings [=arg(=1)] (=0)

Ignore warnings

--svg arg

[DEPRECATED] use --vectorial, SVGs will be generated automatically; this option has no effect

--metric [=arg(=1)] (=0)

use metric units for parameters. does not affect gcode output

--metricoutput [=arg(=1)] (=0)

use metric units for output

--g64 arg

[DEPRECATED, use tolerance instead] maximum deviation from toolpath, overrides internal calculation

--tolerance arg

maximum toolpath tolerance

--nog64 [=arg(=1)] (=0)

do not set an explicit g64

--output-dir arg

output directory

--basename arg

prefix for default output file names

--preamble-text arg

preamble text file, inserted at the very beginning as a comment.

--preamble arg

gcode preamble file, inserted at the very beginning.

--postamble arg

gcode postamble file, inserted before M9 and M2.

--no-export [=arg(=1)] (=0)

skip the exporting process

Drilling options, for making holes in the PCB:

--drill arg

Excellon drill file

--milldrill [=arg(=1)] (=0)

[DEPRECATED] Use min-milldrill-hole-dia meter=0 instead

--milldrill-diameter arg

diameter of the end mill used for drilling with --milldrill

--min-milldrill-hole-diameter arg (=inf)

minimum hole width or milldrilling. Holes smaller than this are drilled. This implies milldrill

--zdrill arg

drilling depth

--zmilldrill arg

milldrilling depth

--drill-feed arg

drill feed in [i/m] or [mm/m]

--drill-speed arg

spindle rpm when drilling

--drill-front [=arg(=1)]

[DEPRECATED, use drill-side instead] drill through the front side of board

--drill-side arg (=auto)

drill side; valid choices are front, back or auto (default)

--drills-available arg

list of drills available

--onedrill [=arg(=1)] (=0)

use only one drill bit size

--drill-output arg (=drill.ngc)

output file for drilling

--nog91-1 [=arg(=1)] (=0)

do not explicitly set G91.1 in drill headers

--nog81 [=arg(=1)] (=0)

replace G81 with G0+G1

--nom6 [=arg(=1)] (=0)

do not emit M6 on tool changes

--milldrill-output arg (=milldrill.ngc)

output file for milldrilling

Milling options, for milling traces into the PCB:

--front arg

front side RS274-X .gbr

--back arg

back side RS274-X .gbr

--voronoi [=arg(=1)] (=0)

generate voronoi regions

--offset arg (=0)

Note: Prefer to use --mill-diameters and --milling-overlap if you just that's what you mean. An optional offset to add to all traces, useful if the bit has a little slop that you want to keep out of the trace.

--mill-diameters arg (=0)

Diameters of mill bits, used in the order that they are provided.

--milling-overlap arg (=50 %)

How much to overlap milling passes, from 0% to 100% or an absolute length

--isolation-width arg (=0)

Minimum isolation width between copper surfaces

--extra-passes arg (=0)

[DEPRECATED] use --isolation-width instead. Specify the the number of extra isolation passes, increasing the isolation width half the tool diameter with each pass

--pre-milling-gcode arg

custom gcode inserted before the start of milling each trace (used to activate pump or fan or laser connected to fan)

--post-milling-gcode arg

custom gcode inserted after the end of milling each trace (used to deactivate pump or fan or laser connected to fan)

--zwork arg

milling depth in inches (Z-coordinate while engraving)

--mill-feed arg

feed while isolating in [i/m] or [mm/m]

--mill-vertfeed arg

vertical feed while isolating in [i/m] or [mm/m]

--mill-infeed arg

maximum milling depth; PCB may be cut in multiple passes

--mill-speed arg

spindle rpm when milling

--mill-feed-direction arg (=0)

In which direction should all milling occur

--invert-gerbers [=arg(=1)] (=0)

Invert polarity of front and back gerbers, causing the milling to occur inside the shapes

--draw-gerber-lines [=arg(=1)] (=0)

Draw lines in the gerber file as just lines and not as filled in shapes

--preserve-thermal-reliefs [=arg(=1)] (=1)

generate mill paths for thermal reliefs in voronoi mode

--front-output arg (=front.ngc)

output file for front layer

--back-output arg (=back.ngc)

output file for back layer

Outline options, for cutting the PCB out of the FR4:

--outline arg

pcb outline polygon RS274-X .gbr

--fill-outline [=arg(=1)] (=1)

accept a contour instead of a polygon as outline (enabled by default)

--cutter-diameter arg

diameter of the end mill used for cutting out the PCB

--zcut arg

PCB cutting depth in inches

--cut-feed arg

PCB cutting feed in [i/m] or [mm/m]

--cut-vertfeed arg

PCB vertical cutting feed in [i/m] or [mm/m]

--cut-speed arg

spindle rpm when cutting

--cut-infeed arg

maximum cutting depth; PCB may be cut in multiple passes

--cut-front [=arg(=1)]

[DEPRECATED, use cut-side instead] cut from front side.

--cut-side arg (=auto)

cut side; valid choices are front, back or auto (default)

--bridges arg (=0)

add bridges with the given width to the outline cut

--bridgesnum arg (=2)

specify how many bridges should be created

--zbridges arg

bridges height (Z-coordinates while engraving bridges, default to zsafe)

--outline-output arg (=outline.ngc)

output file for outline

Optimization options, for faster PCB creation, smaller output files, and different algorithms.:

--optimise [=arg(=2.54e-06 m)] (=2.54e-06 m)

Reduce output file size by up to 40% while accepting a little loss of precision. Larger values reduce file sizes and processing time even further.

Set to 0 to disable.

--eulerian-paths [=arg(=1)] (=1)

Don't mill the same path twice if milling loops overlap. This can save up to 50% of milling time. Enabled by default.

--vectorial [=arg(=1)] (=1)

enable or disable the vectorial rendering engine

--tsp-2opt [=arg(=1)] (=1)

use TSP 2OPT to find a faster toolpath (but slows down gcode generation)

--path-finding-limit arg (=1)

Use path finding for up to this many steps in the search (more is slower but makes a faster gcode path)

--g0-vertical-speed arg (=0.0211667 m s^-1)

speed of vertical G0 movements, for use in path-finding

--g0-horizontal-speed arg (=0.0423333 m s^-1)

speed of horizontal G0 movements, for use in path-finding

--backtrack arg (=inf)

allow retracing a milled path if it's faster than retract-move-lower. For example, set to 5in/s if you are willing to remill 5 inches of trace in order to save 1 second of milling time.

Autolevelling options, for generating gcode to automatically probe the board and adjust milling depth to the actual board height:

--al-front [=arg(=1)] (=0)

enable the z autoleveller for the front layer

--al-back [=arg(=1)] (=0)

enable the z autoleveller for the back layer

--software arg

choose the destination software (useful only with the autoleveller). Supported programs are linuxcnc, mach3, mach4 and custom

--al-x arg

max x distance between probes

--al-y arg

max y distance bewteen probes

--al-probefeed arg

speed during the probing

--al-probe-on arg (=(MSG, Attach the probe tool)@M0 ( Temporary machine stop. ))

execute this commands to enable the probe tool (default is M0)

--al-probe-off arg (=(MSG, Detach the probe tool)@M0 ( Temporary machine stop. ))

execute this commands to disable the probe tool (default is M0)

--al-probecode arg (=G31)

custom probe code (default is G31)

--al-probevar arg (=2002)

number of the variable where the result of the probing is saved (default is 2002)

--al-setzzero arg (=G92 Z0)

gcode for setting the actual position as zero (default is G92 Z0)

Alignment options, useful for aligning the milling on opposite sides of the PCB:

--x-offset arg (=0)

offset the origin in the x-axis by this length

--y-offset arg (=0)

offset the origin in the y-axis by this length

--zero-start [=arg(=1)] (=0)

set the starting point of the project at (0,0)

--mirror-absolute [=arg(=1)] (=1)

[DEPRECATED, must always be true] mirror back side along absolute zero instead of board center

--mirror-axis arg (=0)

For two-sided boards, the PCB needs to be flipped along the axis x=VALUE

--mirror-yaxis arg (=0)

For two-sided boards, the PCB needs to be flipped along the y axis instead

CNC options, common to all the milling, drilling, and cutting:

--zsafe arg

safety height (Z-coordinate during rapid moves)

--spinup-time arg (=0.001 s)

time required to the spindle to reach the correct speed

--spindown-time arg

time required to the spindle to return to 0 rpm

--zchange arg

tool changing height

--zchange-absolute [=arg(=1)] (=0)

use zchange as a machine coordinates height (G53)

--tile-x arg (=1)

number of tiling columns. Default value is 1

--tile-y arg (=1)

number of tiling rows. Default value is 1

Git commit: latest-18-ga3d60336 Boost: 107100 Gerbv: 2.7.0 Geos: 3.9.1