People credited with this unit standard are able to: demonstrate knowledge of factors affecting the finished quality of machined timber; manage hazards associated with setting up a planer for dress four sides; clean and strip a dress four sides planer; explain the sequence of setting up a planer for dress four sides; select and fit preset cutterheads for dress four sides; complete set-up, make adjustments and calculations for dress four sides; and check planer set-up for dress four sides.