A great video showing how to assemble and the initial start up of the Comgrow CNC ROBO router/engraver.
Comgrow Robo CNC Review: The best first budget desktop CNC router/engraver for a beginner
Since the ROBO is no longer manufactured this video isn't relevant, but still
interesting and informative. I
probably would get the Sainsmart to replace the ROBO.
The Sainsmart is not like the Comgrow but it's a great video showing how to calibrate the machine and can
be used on the
Comgrow ROBO. These machines use the same software to run the machine. He shows which parameters to set and where
they are
located and how to change them.
Sainsmart 3018 PROVer Cnc Tutorial with candle, grbl configuration, axes calibration and spoil
board surfacing.