Hello,
i have Chinese 4060 router, a dmt542T Digital Stepper Driver 1.0-4.5A 18-50VDC for Nema 17, 23, 24 Stepper Motor, DEVMO Mach3 USB Interface Board USB CNC Controller 4 Axis Motion Control Card Interface Breakout Board for Stepper Motor Driver. It looks like missing steps on the circular path. With box milling seem to be OK.
I really don't now where is the reason for this. I attach file with photo of result.
Hope someone can help me.
With regards Blažo