The surface quality during milling depends on different process parameters, e.g., cutting speed, feed per tooth, type of tool, workpiece material, and finally, the choice of milling strategy [13; 14]. Surface texture is gaining importance due to the increase in the requirements for the precision machining of parts. In the manufacturing process, surface topography and surface roughness have become major areas of interest. The final texture of machined surfaces is created by overlaying the achieved shape after machining with a single cutting path [15]. During milling, the cutting tool performs several steps to complete the machined area. In the case of using a ball nose end mill, the rest of the material, called scallop height, is created on the machined area between these cuts. The scallop height between each machined step is defined by tool diameter and by stepover distance [16]. In the CAM system, the scallop height is based on two parameters--tool geometry and feed rate [17]. The field of spherical tooling is gaining popularity in practice. [PERSON] et al. [16] investigated an algorithm to predict the final surface after machining with a spherical tool, and two years later, [PERSON] et al. [18] included the angle of inclination of the tool on the surface texture in the algorithm. [PERSON] [19] studied the influence of the machining parameters on the surface topography of the scallop height in high-speed milling. [PERSON] [20] defined the scallop height as the combination of two surfaces, namely convex and concave, the radius of the ball tool and the paths between them. [PERSON] et al. in [21] developed a model to create surface topography using a ball end mill with two offsets strategies by the zig-zag method and one-direction milling strategies. He later studied the creation of scallop height on the profile of the machined surface during face milling using a ball end mill. However, the estimation of the influence of the choice of strategy on the scallop height of the machined surface is still under research. At present, most of the produced parts have different surfaces. In the machining process, it is very important to produce them in the required quality and dimensions. Achieving the required dimensions depends on the selection of appropriate finishing strategies, where a ball nose end mill is often used [19]. [PERSON] [22] conducted research into the inclination effect of the tool and consequently compared the scallop height between tool axis inclination on complex free-form surfaces. [PERSON] and [PERSON] [23] investigated different tool inclinations on the scallop height model. [PERSON] et al. investigated the contact point in the interaction of the cutting tool and the machined surface and the inclination axis of the tool. Along with [PERSON], they claim that by using the crushing effect, it is possible to obtain better roughness parameters when using a ball nose end mill for plane surfaces [24; 25]. The study [26] analyzed the influence of the finish milling strategies in various tool inclinations when free-form surface milling. The research focused on three contact points--upward milling, downward milling, and milling with the center of the tool. Input data settings such as cutting parameters, tools used, milling strategy, cooling, and tool holder can affect the surface quality of the machined surface [27]. Different marks created as feed marks of the tool, vibration marks, and some surface defects (scaly burrs, scratches, feeding marks, slight banding bulges) can have a negative effect on the behavior of the part [28; 29]. When machining part surfaces, some critical areas may appear. These areas include convex, concave, or planar surfaces where the tool is in a perpendicular position to the surface to be machined. In this case, it is good to know how much the perpendicular tool position can affect the surface quality. We know that the contact between the tool and the surface is very close, and the cutting speed in the cutting process is low.