The operating principal of the Mechammer Mark II consists of a mechanical piston creating alternately positive and negative pneumatic pressure which reciprocally moves a ram in a cylinder. By employing a pneumatic ram, hammer blows are actually cushioned, and automatically adjusted for the thickness of the gauge of metal being planished or shaped.

Unlike traditional planishers, there is no “clamping” of the workpiece and the operator is more easily able to maneuver the panel between the hammer and the anvil. Not having to develop a “feel” for panel movement and pressure accelerates the operator´s learning curve dramatically.