7. Rotate the bevel blade holder up to the neutral position and lift the handle bar to an upright position.
8. Turn the mat 1/4 turn to the right and make sure that the mat is down against the squaring arm and against the mat guide on the left.
9. Continue steps 5 through 8 until all four sides are cut.
TIP: Do not push down on the handle bar when cutting, this will flex the cutting bar upwards and prevent the blade from cutting through the mat board.