Making PCB on home-brew Ilan/Max/CBA replicator machine: Assumes Mac OS X but relevant to all OS platforms: install git install python2.6 install numpy install SciPy PIL -> grab this from ~labrune/software/Blue/Imaging-1.1.6 python setup.py install (to install PIL [python Imaging libraries   required] cd  ~labrune/software/CadPy/lanversion python cad.py in ~labrune/software/CadPy/lanversion before you open cad.py, make sure you get cad.cfg which is on the   class website and put that in the same directory as the cad.py   executable python cad.py pcb.cad .cad Modify the script: 1. In Script window scroll 9/10 of the way down and look for #define   board 2. Change the origin to 0, 0 3. Z = -0.007 (0.005 works but this setting is good for ilan's machine) 4. uncomment dpi =500 and comment the line above (dpi = 200) 5. hit render 6. hit cam (brings up CAM- computer 7. output format .g (GCODE) 8. change tool diameter to 0.0156 9. change contours to -1 (contour everything) 10. feed rate = 500 milimeters per minute (how fast the tool will move   through the part). 11. hit contour button 12. save!  it makes a .g file in the same directory as the original. 13. CHANGE the file extension from .g to .gcode you save out after you contour, export gcode. First use of the machine: You have to have the machine plugged in to install the driver First install replicatorG drivers (found in replicator G folder- drivers->FTDIUSBSerialDriver2_2_9 replace machines.xml file that is in replicatorG with the one from   Ilan.. Machine->Driver->MtMMill Load the .gcode file you made from cad.py TAPE it down using double-sided tape (2 strips with one strip hanging   over the edge so you can easily pull the part off when you are done. Machine->Control panel Jog the tool to the lower left hand corner (to later set origin) (Use the Jog controls to set x y, BE VERY CAREFUL with Z (use   increments of 1), it can break the tool) For setting Z= use 1mm increments position it closely, loosen set   screw and pull/push tool tip manually, tighten screw,  SET ZERO (sets   origin) Caveat: the above step is very important.. you should only have a small   portion of the tip (the darker portion) visible for best results. now, lift up tool( z+) 1mm to make sure its NOT in contact when you   start machining Motor Speed = 255, hit Forward to initialize it hit stop. finally HIT THE ARROW TO PART button at the top of the interface (not   the dotted line one) to make the part.  it starts up slowly, wait... once the part is done, make sure you move the tool out of the way   carefully (using smaller increments) and shop vac your stage area, grab the part.