The attempts of researchers in industries to obtain accurate and high quality surfaces led to the invention of new methods of finishing. Magnetic abrasive finishing (MAF) is a relatively new type of finishing in which the magnetic field is used to control the abrasive tools. Applications such as the surface of molds are ones of the parts which require very high surface smoothness. Usually this type of parts has freeformsurface. In this study, the effect ofmagnetic abrasive process parameters on freeformsurfaces of parts made of aluminumis examined.This method is obtained through combination of magnetic abrasive process andControlNumerical Computer (CNC).The use of simple hemisphere for installation on the flat area of the magnets as well as magnets’ spark in curve form is a measure done during testing the experiments. The design of experiments is based on response surface methodology.The gap, the rotational speed of the spindle, and the feed rate are found influential and regression equations governing the process are also determined.The impact of intensity of themagnetic field is obtained using the finite element software ofMaxwell. Results show that in concave areas of the surface, generally speaking, the surface roughness decreases to 0.2 𝜇m from its initial 1.3 𝜇mroughness. However, in some points the lowest surface roughness of 0.08 𝜇m was measured.
