A brake assembly machine for forming a hem in sheet metal has a top bar and a bottom bar opposite the top bar. The top bar and the bottom bar can move towards one another to hold sheet metal therebetween. The brake assembly machine also has an angle foot movable to a proximity of a bending bar that moves about a bending bar axis and includes a bending face. As the bending bar moves about the bending bar axis, the bending face of the bending bar can move closer to the angle foot and before the bending bar bending face contacts the angle foot, the angle foot moves to avoid contact with the bending bar.