Table 1 Comparison of four common 3D printing methods
Printing method | SLA | SLS | 3DP | FDM |
|---|---|---|---|---|
Resolution | High | Medium | Medium | Low |
Surface quality | Smooth | Medium | Medium | Rough |
Cost | Relatively expensive | Medium | Medium | Low-cost machines and materials |
Materials | Photosensitive resin | Wax, metal, ceramic powder | Wax, metal, ceramic powder | Polymers: PLA, ABS, PVA |
Other features | Limited to photopolymers; supports printing of flexible materials | Design freedom; no need for support; no post processing needed | Adhesive sprayed through nozzle | Limited to materials that melt |