manufacturing systems History of engineering & technology 5 Industry 4.0 4 additive manufacturing 4 deep learning 4 fused filament fabrication 4 3D printing 3 CFRP 3 FDM 3 PLA 3 Ra 3 Technology: general issues 3 aluminum 3 drilling 3 dry machining 3 forming 3 fused deposition modeling 3 incremental forming 3 industry 4.0 3 infill density 3 layer orientation 3 machining 3 magnesium 3 mechanical properties 3 microstructure 3 occupational accident 3 production planning 3 rapid prototyping 3 repair and maintenance operations 3 risk assessment 3