FMLs are an increasingly used group of materials due to their properties. Thanks to their advantages, they are used in many areas of industry. An example of this type of material is CARALL. This paper presents the influence of machining conditions on surface quality and cutting forces after circumferential milling of a 3-layer CARALL. The workpieces were formed by combining two different materials: EN-AW 7075-T6 aluminium alloy and Carbon Fiber Reinforced Plastics (CFRP). The effects of cutting speed (vc), feed rate (fz) and helix angle (λ) on material height difference and feed force Ff were investigated. The experiment concluded that poorer surface quality and higher cutting forces were obtained for a tool with a higher helix angle. The parameters to obtain the best surface quality (the lowest material height difference) are cutting speed of 500 m/min, feed rate of 0.08 mm/tooth and helix angle of 20°.The lowest surface accuracy (the highest material height difference) was obtained after machining with the following parameters: cutting speed of 200 m/min, feed rate of 0.08 mm/tooth and helix angle of 35°.