By processing technical polymers like acrylonitrile butadiene styrene or polycarbonate/ acrylonitrile butadiene styrene blends with injection molding machines for a following electroplating coating there is, next to the electroplating parameters, the surface of the injection molded part which is responsible for the conjunction of the polymer and the metal and influenced by processing parameters. The influences of injection molding parameters on the resulting caverns in polymer surfaces are investigated. For this purpose relevant processing parameters influencing polymer surfaces are examined. Further, a developed objective image analysis method to quantify the two-dimensional shape of caverns is used to investigate part surfaces. The analysis is based on scanning electron microscope (SEM) images of chemical etched polymer part surfaces (ABS, PC/ABS). For quantifying the surface, meaningful key figures, such as roundness, degree of orientation, caverns/µm² and area of caverns are emerged. Different ABS and PC/ABS Materials are tested, compared and coherences between shape of the caverns, processing parameters, material properties and geometry influences are elaborated. Therefore, a factorial design of experiment with varying the screw advance speed, mold temperature and melt temperature is conducted. Two different spots on the part, which differ by shear stress and strain are selected by the support of 3D computational injection molding simulation. The effects of processing parameters and geometry to the surface are elaborated and compared to the state of the art.