## 1 Introduction
The scanning can be performed in different profiles, directions, angles, and depths, and, what is very important in the end, a combination of scans can be performed in a unitary whole, of great resolution and finesse, being the most recommended application in the field reverse engineering. There are two important strategies for creating a 3D model in reverse engineering applications [25]. These are the solid feature-based and surface feature-based methods. The choice of strategy for modeling parts (mechanical or non-mechanical) is important, because the fewer elements used in the modeling process, the smaller the file size will be, and the smoothness of the part will be ensured. Once the object exists in the database, the same features can be easily called upon, even improved, by correlating with other newly received/acquired information in a multitude of files that complete the complexity of the process. Therefore, reverse engineering can be said to be involved in the design, manufacture, construction, and maintenance of products, systems, and structures. Any technological design created will not completely conform to the desired final product; there will be inconsistencies, manufacturing errors, etc., due to causes more or less related to the design software used, its possibilities, the training of the designer, etc. A tandem between additive remanufacturing and 3D scanning is the technology that encourages the recycling and reuse of materials and supplies for the manufacture of new products and, implicitly, the reduction in waste, with a substantial financial potential (Figure 1). This innovation creates new materials, design models, and potential businesses that promote circular economy principles. These innovative technologies open opportunities for this type of additive remanufacturing to be a valuable resource for the reuse of parts and assemblies that can still serve the hydraulic drive system. The great advantage that this technology brings to engineering,and especially for hydraulic systems, is the degree of complexity of the geometry for the parts made and the possibility of their customization. The transition from a unit production to a mass production can be achieved much easier with the help of additive manufacturing of the prototype, at a low price and high yield in the realization, not involving related technologies. The flexibility in making products/parts with complex shapes, the variety of techniques for making the external design of the product, and the possibility of changing the shape of the finished product without the need for additional manufacturing preparation are the major advantages of a manufacturing technology that makes the transition from unique production to other types of production, series or mass. Additive manufacturing processes are characterized as technologies dependent on a 3D modeling program and a user who has advanced skills in using these technologies. The process of 3D printing allows companies and individuals to quickly prototype ideas for new parts or products, and also significantly reduces costs related to product creation, minimizing supply chains, waste produced, and storage space required for the resulting products. The final success in the market integration of this technology depends on technical and economic factors such as ease of use, technology complexity, technical support, technology implementation costs, operating costs, raw material, environmental impact, competition, evolution of the market offer, and legislation. The remarkable energy efficiency and the utilization of eco-friendly materials during the prototyping phase make 3D additive manufacturing technology a frontrunner in the realm of sustainable technology [26; 27]. This factor serves as a catalyst for its integration into contemporary engineering practices. A prior investigation [28] of the main author of this article addressed the use of additive manufacturing to produce the components of a hydraulic drive system employed in a fertigation pump.