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Fabrication process of 3D printable TCP–PLA composite filament. (a) 3Devo filament maker extruder. (b) Front view of the extruder showing the filament extrusion out of the nozzle to the puller system. (c) Side view of the extruder showing the spooling process of the filament. (d) Top view showing the TCP powder with the PLA pellets in the hopper.
