A printing apparatus having a back plate integrally connected to a ram capable of reciprocating or being stationary. The back plate has a surface that corresponds to the printing surface. A die carrying indicia is made to adjust to the contour of the printing surface automatically by use of spring bias means or resilient padding. Insert heaters are connected to each die. They allow flexibility of design and provide each die and/or decoration with a constant differing heat. Therefore, printing and decorating can be done on various sizes and shapes of plastic surfaces in a variety of colors.