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A schematic diagram (a) showing the different parts of the FDM printer: filament spool, heated printer nozzle, and printing platform; (b) showing the different parts of the SLA printer: laser/UV source, resin tray, and printing platform; (c) showing the different parts of the SLS printer: powder roller, laser beam source, laser scanner, and fabrication piston; and (d) showing the different parts of the SSE printer: syringes, nozzle, and printing bed.
