• Development of an industrial robotic large-scale metal additive manufacturing arm where advanced Gas-MetalArc Welding (GMAW) is used.•Achieved complete autonomous behaviour for the metal manufacturing process via the robotic arm, using ROS and various sensors such as position and temperature sensors.•Designed schematic for Robot circuit board on KiCad.•Developed and executed detailed tests on hardware as well as software while creating and updating important design documentation… Show more • Development of an industrial robotic large-scale metal additive manufacturing arm where advanced Gas-MetalArc Welding (GMAW) is used.•Achieved complete autonomous behaviour for the metal manufacturing process via the robotic arm, using ROS and various sensors such as position and temperature sensors.•Designed schematic for Robot circuit board on KiCad.•Developed and executed detailed tests on hardware as well as software while creating and updating important design documentation and test plans to obtain optimum results.•Managed product prototype as per client’s demands and project requirements including technical report writing and documenting project’s progress as well as project planning via Gantt chart. Show less