Don’t get me wrong it worked and I could make 1 or 2 or sometimes 10 or more of the same component one after each other then for no apparent reason it would lock up and stop on a certain line of gcode
You could stop the gcode and star it from the point of failure or from the beginning then it would lock out on a different line of code
Restart mach3 which meant rehiring then lathe and run the same gcode and it would be ok for a number of runs or maybe fail on the first run
Totally random
I moved to linuxcnc and never had any such failures. Same pc same lathe and control electronics just linuxcnc instead of mach3
This caused me so much frustration over the years

Paul


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