Fig. 4: Surface roughness.

The Ra (A, C) and Spc (B, D) of the thermoplastic layers. A and B show differences in the print or machined surface, while (C and D) show differences in the thermoplastic material.
The Ra (A, C) and Spc (B, D) of the thermoplastic layers. A and B show differences in the print or machined surface, while (C and D) show differences in the thermoplastic material.