The operation of the lathe initiates when the operator walk to grasps a metallic plate, then he
attaches it to the machine, and fastens it with tools and clamps involving considerable effort.
Longitudinal and transverse movements begin to make the turning. Both hands in this action
are always on the levers and the operator is simultaneously watching the visual display or the
work piece, this requires high levels of control and coordination. (See Figure 2)