2. Evaluation of the efficiency of the base powder coating gun-nozzle

   The design work implemented in this paper makes use of reverse engineering to modify the existing gun nozzle design in order to design new efficient nozzles that are capable of achieving increased powder deposition efficiency. Figure 3 presents the 3D model and the Computer Aided Design (CAD) drawing of the existing nozzle, while in figure 4 the spray pattern of the existing gun nozzle is presented. The powder deposition test conducted was conducted on a flat plate with constant gun pressure and voltage.