Speaking of skipping steps, when I got my machine (80W CO2 “red and black” chinese clone, Rudia controller) a few months ago, my Y axis motor wouldn’t move at all. I traced it down to a poor connection in a plug that connects the stepper motor wire to the wire from the mother board where it transfers through sheet metal in the framework of the machine. There was too much tension on the wire from the stepper, so the wire would partially disconnect from this “transfer” plug. I simply unscrewed the plug from the framework to release tension from the wiring. The machine has been working fine ever since, with the exception of one instance when the Y axis motor quit again, but resumed after I fiddled with this connection again. The other exception is apparent skipping or minor misalignment of some lines in my cuts. Could this misalignment be traced to this apparently fixed, but possibly intermittent wiring in this plug?
Tim