Thanks for the tip, the RoboPaint API road looks interesting. Will download the code and have a look.
Yes, I have “patched” bits n pieces from the Inkscape eggbot extension. I am currently sending commands stand alone, without a GUI. No sign of the EBB “bug” yet. I am not testing the rotation but verify that the motor always returns to the starting position, (when the motor “misses” step the “home” position will change)