Yes, you guessed correctly. The fourth axis is parallel to Y.
Your method worked great. I used the newest config from the GitHub.
I un-commented the fourth axis parts, and then the only thing I had to do was label that section as a:
So now I have four axes when I do the $ SS List and I can move all of them. The tablet part of the web page access shows the A position.
I need to find a post processor for vectric that outputs for wrapping to a file in GRBL or gcode.
I’d like to draw in fusion but they have a additional pay wall to get wrap to rotary or 4 axis cam operations
Maybe time to learn FreeCad