CNC Drilling for a case.
1.A FreeCAD 0.16 uses            cnc.fcstd
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                                  v
  B FreeCAD exported into        frontpanel3.step
2.A Heekscad 1.1.0 imported from frontpanel3.step
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                                  v
  B Heekscad uses                frontpanel3.heeks
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                                  v
  C Heekscad exported            frontpanel3.ngc
3.A Candle 1.1.7 opens           frontpanel3.ngc
                                  |
                                  v
  B Candle sents the data over   USB
4.A GRBL 1.1 gets the data from  USB
  B GRBL controls the three stepper of the CNC with a 2mm cutter

