front.ngc

( pcb2gcode 1.2.2 )
( Software-independent Gcode )

G94 ( Millimeters per minute feed rate. )
G21 ( Units == Millimeters. )

G90 ( Absolute coordinates. )
S0 ( RPM spindle speed. )
G64 P0.05080 ( set maximum deviation from commanded toolpath )
F500.00000 ( Feedrate. )

F500.00000 ( Feedrate. )
M3 ( Spindle on clockwise. )
G04 P0 ( dwell for no time -- G64 should not smooth over this point )
G00 Z2.00000 ( retract )

G00 X16.40840 Y-6.22300 ( rapid move to begin. )
F250.00000
G01 Z-0.08000
G04 P0 ( dwell for no time -- G64 should not smooth over this point )
F500.00000
X16.40840 Y-6.22300
X20.65020 Y-10.43940
X20.67560 Y-11.07440
X20.59940 Y-11.15060
X19.96440 Y-11.12520
X15.57020 Y-6.70560
X4.77520 Y-6.70560
X4.69900 Y-6.62940
X4.69900 Y-6.04520
X4.77520 Y-5.96900
X16.15440 Y-5.96900
X16.40840 Y-6.22300

G04 P0 ( dwell for no time -- G64 should not smooth over this point )
G00 Z20.000 ( retract )

M5 ( Spindle off. )
M9 ( Coolant off. )
M2 ( Program end. )

millproject

# Based on http://reprap.org/wiki/PCB_Milling#Quickstart_2
# this is an example config file for pcb2gcode.
# place this in the same directory as your gerber files to save typing

# You may want to uncomment and change those in local project files
#front=JTAG-B_Cu.gbl
#back=Gen7Board.back.gbr
#drill=Gen7Board.plated-drill.cnc
#outline=contour.back.gbr

# Specify all parameters in mm, gcode output is unchanged
metric=1
metricoutput=1  # Output g-code in mm

# parameters for isolation routing / engraving / etching
zwork=-0.08     # milling depth in mm
zsafe=2         # safety height for rapid moves
zchange=20      # tool changing height
mill-feed=500   # mm/min, horizontal speed while milling
mill-speed=0    # Spindle rpm, unused

# Half tool width
offset=0.25      # Distance to trace: radius of drilling bit 
# generate voronoi regions
#offset=100

# Outline Gerber files have an outline around the board instead of an area
fill-outline=1
outline-width=1 # Not sure what this does exactly

# parameters for cutting out boards
cutter-diameter=1
zcut=-1.7               # board is around 1.5mm
cut-feed=200            # mm/min, horizontal speed while cutting
cut-speed=0             # Spindle rpm, unused

# Maximum depth to cut in a single pass (if this is less than zcut,
# multiple passes will be done).
cut-infeed=2

# drilling parameters
zdrill=-2       # Drill depth
drill-feed=500  # mm/min, vertical speed while drilling
drill-speed=0   # Spindle rpm, unused
drill-front=0   # Drill through the back of the board

# Do not use g81, Grbl does not support it
nog81=1

# For png output?
dpi=1000

# Bridges are gaps in the outline to prevent the PCB from becoming completely
# loose while cutting the board.

bridges=3       # Width of each bridge
bridgesnum=2    # Number of bridges (increase for bigger boards)
zbridges=-1.0   # Still cut off 1mm (leaving about 0.5mm) off the bridges, making them easier to break out
optimise=1

trace.gbr

G04 #@! TF.FileFunction,Copper,L1,Top,Signal*
%FSLAX46Y46*%
G04 Gerber Fmt 4.6, Leading zero omitted, Abs format (unit mm)*
G04 Created by KiCad (PCBNEW 4.0.1-2.201512121406+6195~38~ubuntu15.04.1-stable) date Wed 16 Dec 2015 03:26:07 PM CET*
%MOMM*%
G01*
G04 APERTURE LIST*
%ADD10C,0.150000*%
%ADD11C,0.250000*%
G04 APERTURE END LIST*
D10*
D11*
X15875000Y-6350000D02*
X20320000Y-10795000D01*
X5080000Y-6350000D02*
X15875000Y-6350000D01*
M02*