I had tried the suspect files cutting into "air" and they had the same random behaviour. I have just done some cutting with UCCNC version 1.0031 an...

Rory thanks of the feedback. I contacted CNCdrive and they had the same results as you - it runs OK on 1.0034 even with my profile loaded. I am going...

Frank. Thanks. I have contacted CNCDrive directly. I will see what they say. Thanks Dave.

Rory, all. I think I may have found some clue to my issue with random circles and movement. I disabled my backlash compensation and the problems seem...

Rory UCCNC details software version 1.0031 firmware version 1.0000 hardware version 0.0000 API version 1.5150 PC details in attachment below...

Rory, all. Here is a video of a tool path that shows the random behaviour. I have confined the video to the bits of interest. The code was running in...

Rory, all. Here is a youtube video of a file that shows the random circles and skipped paths. Obviously it is not all of the sequence, that would hav...

Rory. Thanks for your responses. The post processor is definitely set to Mach 2/3 Arcs (mm)(*txt). I do not see how it can be the machine as the...

Fixed thanks Dave