| Methods | Classifications | Ref. |
|---|---|---|
| Vat photopolymerization | i) Stereolithography (SLA) ii) Digital Light Processing (DLP) |
80-84 |
| Material extrusion | i) Fused Deposition Modeling (FDM) | 97-99 |
| Powder bed fusion | i) Selective Laser Sintering | 112-114 |
| Binder jetting | i) Inkjet 3D printing | 122 |