## 1 Introduction  
Materials' processing technology has been continuously developed to improve production efficiency and quality. Computer-aided manufacturing (CAM), one of the most interesting technologies available, offers convenience and cost reduction for manufacturing by using a computer-aided design (CAD) [1]. In the past, most CAM technologies used only subtractive manufacturing that lost the cut material, such as computer numerical control (CNC), waterjet, and laser cutting. Nowadays, additive manufacturing (AM) or 3D printing is widely used for fabricating complex parts as an up-to-date CAM [2]. AM technologies can help to reduce material costs and manufacturing time by additively fabricating layer by layer to form the shape as designed by the CAD file. Additionally, these technologies can produce parts with desired material behavior, such as optimized shape and density for specific material properties. With these advantages, AM technologies are widely used in many industries, such as medical, automotive, and aerospace [3, 4, 5, 6, 7]. Particularly in aerospace industry, a lightweight design of the components for spacecraft was presented by [4, 5]. The material behavior of the components manufactured by AM was studied by adjusting the print parameters. The development and implementation of AM in the aerospace industry were comprehensively reviewed by [6, 7], in which the primary applications and associated commercial and technical benefits were summarized. An AM part can be designed by adjusting its print parameters, such as the number of layers, layer height, wall thickness, infill density, infill pattern, pattern orientation, etc. Many researchers have studied the impacts of print parameters, resulting in the mechanical properties of AM parts using the tensile test [8; 9; 10; 11; 12; 13]. For example, [PERSON] et al. [9] studied the effect of infill density on the mechanical behavior of polylactic acid specimens fabricated by means of fused deposition-molding technology. The study showed that the Young's modulus is significantly impacted by infill density. In a study by [10], the effect of infill density with a triangular infill pattern on mechanical properties of seven different plastic materials was investigated using the tensile test. The results showed that the yield strength and Young's modulus are directly affected by infill density. As the infill density increased, the tensile yield strength and Young's modulus increased. Their study also showed that, for some materials, the failure mode also depends on infill density. The effect of layer parameters on the mechanical properties of plastic AM parts made from acrylonitrile butadiene styrene was experimentally investigated by [12]. Specimens were printed with two different print parameters, i.e., print directions and the number of layers, while the layer height was set as a constant value for all layers. The results show that the print direction impacts the strength of specimens in every number of layers considered. The strength and Young's modulus became constant at twelve layers or more. The effects of print parameters, e.g., nozzle diameter, on metal AM parts made from 316L stainless steel were investigated by [13]. It was found that a smaller nozzle diameter gives more geometrical accuracy, but that the mechanical performance decreases. The influence of print parameters on the flexural properties of metal AM parts was also studied by [14], in which build orientation effects were investigated. In recent years, metal additive manufacturing (MAM) has received more attention in many sectors for producing metal parts. A well-known MAM technique is powder bed fusion (PBF), which spreads powder to form a metal part fused selectively by a high-energy beam. Since PBF needs strict safety regulations and is expensive, extrusion-based MAM methods are considered an alternative for manufacturing more accessible and safer metal parts without dust and lasers.