Did anyone try Puremotion 2.0 (instead of e.g. Mach3)?
Looks like I can get a free lifetime version because I already use a Purelogic ethernet based controller board for one of my CNC machine.
If sales is correct, it can maintain a proper mm/s feedrate when a motion involves linear and a rotational axis.
Something MACH3 can’t do (or rather lets you input an “assumed radius” in general settings) because it doesn’t know where in space the 4th axis is and this how far you are from the center of rotation at the start, end and during a motion.