Quote Originally Posted by Stressedwoodman View Post
Now for the difficult bit.. understanding the gcode... already emailed the vendor of the code to ask why there is a different datum(G90) for each tool change. In my 30 odd years of engineering I have never seen datums refined so many times.
G90 is not a Datum, it's switching the mode to Absolute, G91 puts it into incremental mode.