Chicago Pneumatic Planisher: A pneumatic hammering device perfected for the creation of aeronautic panels during WWII. This machine has found a home in the automotive coachbuilding field. Although it can be used to create three dimensional panels, as those of the Power Hammer and English Wheel, its finest quality is that of smoothing damaged or newly created panels to a finer finish. An advantage is its ability to stress relieve any strains accumulated in the panel so that it will maintain its shape over years to come.