I can run my 4th axis in position and velocity modes. So... any possibility to get new features for lathe plugin, like "spindle axis" or something like that? Shoudnt be that hard...
For use the 4axis as a spindle (Like a lathe), it's not in cambam that you can set that, in CB, you do a standard Gcode for turning.
If you are using Mach3, you can set your 4th axis as a spindle in port&pin, then, when Mach3 encounter a M3 it start running the 4th axis
I don't know if the S value (speed) for rotation has any effect on the motor speed, certainly, you must play with the step per to change the RPM.
enable Spindle and set the same values as for the A axis in the Spindle section (and disable A axis)
enable spindle motor output and step/dir
It would be a good idea to create a new profile in Mach3 for this "lathe" config of the CNc.