In the current configuration, the Rotary Axis uses the X-axis and Z-axis to move along the rotational axis of the material, with the Y-axis drivers disconnected and reconnected to the Rotary Axis motor to provide rotational movement. This means that in this configuration, the system is not a full 4-axis machine, but more of a 2-axis + rotary system. Each kit will come with a switch to toggle 3-axis and rotary-axis modes.
With the new, upcoming SuperLongBoard and an external driver combo, we will provide full 4-axis support which will allow all motors to be driven at the same time. Please check our blog for updates.