Not sure what you are asking for.
In a lathe the spindle turns continuously at a set speed, so it is more like a tool head than an independent axis.
A 3 or 4 axis CNC mill with a rotational axis is similar in that it has a chuck to hold the workpiece, but the chuck is an independent axis and it's position is controlled, it can rotate freely in either direction but does not rotate at high speed unlike a lathe.
For a CNC mill, then in principle you can use printer firmware to control each axis. You just send the printer X,Y,Z coordinates and the steppers will be moved accordingly. However, some printer firmware treats the Z axis specially, so you would need firmware that treats X,Y,Z equally.
There are some firmwares more suited to CNC work which may have support built in, eg. GRBL. There is also Smoothieware which is more flexible in the types of machine model it implements.
In a lathe the spindle turns continuously at a set speed, so it is more like a tool head than an independent axis.
A 3 or 4 axis CNC mill with a rotational axis is similar in that it has a chuck to hold the workpiece, but the chuck is an independent axis and it's position is controlled, it can rotate freely in either direction but does not rotate at high speed unlike a lathe.
For a CNC mill, then in principle you can use printer firmware to control each axis. You just send the printer X,Y,Z coordinates and the steppers will be moved accordingly. However, some printer firmware treats the Z axis specially, so you would need firmware that treats X,Y,Z equally.
There are some firmwares more suited to CNC work which may have support built in, eg. GRBL. There is also Smoothieware which is more flexible in the types of machine model it implements.