There are two methods used with CNC bending. The first uses CNC press brakes, which may be attached to the bottom bed. Engineers use V block tooling to keep the metal in place while an upper beam undergoes the force of the V blade tools. This is called down forming. The second way to CNC bend is the opposite, when an up forming machine moves the bottom bend and the upper beam is fixed into place. Both approaches make the same results in the end, so engineers have limitless options for their designs.