Table 1.

Analysis of the state of starting material working principle for AM processes [1].

State of starting material Process Material preparation Layer creation method Typical materials Applications
Filament FDM Melted in nozzle Continuous extrusion & deposition Thermoplastics, waxes Prototypes, casting patterns
Robocasting Paste in nozzle Continuous extrusion Ceramic paste Functional parts
Liquid SLA Resin in a vat Laser scanning UV curable resin, ceramic suspension Prototypes, casting patterns
MJM Polymer in jet Ink-jet printing Acrylic plastic, wax Prototypes, casting patterns
SLS Powder in bed Laser scanning Thermoplastics, waxes, metal powder, ceramic powder Prototypes, casting patterns, metal and ceramic
SLM Powder in bed Laser scanning Metal Tooling, functional parts
Powder EBM Powder in bed Electron beams scanning Metal Tooling, functional parts
3DP Powder in bed Drop-on-demand binder printing Polymer, metal, ceramic, other powders Prototypes, casting shells, tooling
Solid sheet LOM Laser cutting Feeding and binding of sheets with adhesives Paper, plastic, metal Prototypes, casting models

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