Desktop cnc for fabricating PCB

  * Y axis zero points difference 0.816
  * Reference point X coordinate 7.03
  * Reference point Y coordinate 72.04
  * Z offset -12.96
  * Contour milling Z offset -11.1

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Insulation Milling Setting 

  * Insulation Milling (Two Path 0.2-0.5mm bit)
   * Tool Diameter 0.255mm
   * Tool Speed 1390us
   * Feed X and Y axes 1000.0 mm/min
   * Feed Z axis 200.0 mm/min
   * Arcs 30%
   * Additional passes Count 2


  * Insulation Milling (One Path 0.1-0.15mm bit)
   * Tool Diameter 0.18mm
   * Speed 1390us
   * Feed X and Y axes 250.0 mm/min
   * Z axis 200.0 mm/min
   * Arcs 100%
   * Additional passes Count 0

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Predefined locations 
   * Far away: 0.0 225.0 0.0
   * Tool change: 0.0 0.0 0.0

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Milling Order

   * Bottom -> Top -> Drill -> Contour

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Cad Setting

   * Standard (most wires): 0.024" = 0.6096 mm
   * Narrow spaces: 0.016" = 0.4064 mm
   * Between DIP pins (0.100" pad spacing): 0.012" = 0.3048 mm
   * Do not use default 0.010" traces = 0.254 millimeters

N/C Drill: 0.6mm, 1.1mm, 1.2mm, 1.8mm, 3mm

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Reference 

  * http://cirqwizard.org/docs/intro.html
  * http://makerspace.engr.utexas.edu/wiki/index.php/Desktop_2D_CNC_Machines_for_Fabricating_PCBs
  * http://cirqoid.com/blogs/ideas/17845932-cirqoid-blogging-again-laser-range-finder-with-tft-display