2. Prototyping Technologies Base Materials
Selective laser sintering (SLS) Thermoplastics, metal powders
Fused deposition modeling (FDM) Thermoplastics, eutectic metals
Stereolithography (SLA) Photopolymer
Laminated object manufacturing (LOM) Paper
Electron beam melting (EBM) Titanium alloys
3D printing (3DP) Various Materials
2
3. additive technique
layer of powder placed on base
high power laser used to fuse
selected parts of the powder
the powder bed is lowered a
small amount and a new layer of powder is
spread
does not require any support structures
3
4. Prototyping Technologies Base Materials
Selective laser sintering (SLS) Thermoplastics, metal powders
Fused deposition modeling (FDM) Thermoplastics, eutectic metals
Stereolithography (SLA) Photopolymer
Laminated object manufacturing (LOM) Paper
Electron beam melting (EBM) Titanium alloys
3D printing (3DP) Various Materials
4
5. additive technique
material is laid down in layers
plastic material is melted in
a nozzle that moves in XY
direction
typically uses ABS plastic
support material is required
stratasys
5
6. Prototyping Technologies Base Materials
Selective laser sintering (SLS) Thermoplastics, metal powders
Fused deposition modeling (FDM) Thermoplastics, eutectic metals
Stereolithography (SLA) Photopolymer
Laminated object manufacturing (LOM) Paper
Electron beam melting (EBM) Titanium alloys
3D printing (3DP) Various Materials
6
7. additive process
uses a vat of liquid UV-curable
resin and a UV laser
exposure to the laser causes
the material to harden
after a pattern has been traced,
the platform descends and a
resin filled blade recoats the top
requires support structures
7
8. Prototyping Technologies Base Materials
Selective laser sintering (SLS) Thermoplastics, metal powders
Fused deposition modeling (FDM) Thermoplastics, eutectic metals
Stereolithography (SLA) Photopolymer
Laminated object manufacturing (LOM) Paper
Electron beam melting (EBM) Titanium alloys
3D printing (3DP) Various Materials
8
9. sheet is adhered to substrate
with a heated roller
laser traces out the outline
of the layer
non-part areas are cross-
hatched to facilitate removal
of waste material
next layer is pulled across and the process is
repeated
9
10. Prototyping Technologies Base Materials
Selective laser sintering (SLS) Thermoplastics, metal powders
Fused deposition modeling (FDM) Thermoplastics, eutectic metals
Stereolithography (SLA) Photopolymer
Laminated object manufacturing (LOM) Paper
Electron beam melting (EBM) Titanium alloys
3D printing (3DP) Various Materials
10
11. metal parts are made from a metal powder
a layer of powder is spread and the part
region is melted together by a computer
controlled electron beam
11
12. Prototyping Technologies Base Materials
Selective laser sintering (SLS) Thermoplastics, metal powders
Fused deposition modeling (FDM) Thermoplastics, eutectic metals
Stereolithography (SLA) Photopolymer
Laminated object manufacturing (LOM) Paper
Electron beam melting (EBM) Titanium alloys
3D printing (3DP) Various Materials
12
13. “inkjet” type process
a fine powder of plaster or corn starch is
bonded by “printing” an adhesive from the
printhead
considered the fastest technique
zcorp 13
14. Prototyping Technologies Base Materials
Selective laser sintering (SLS) Thermoplastics, metal powders
Fused deposition modeling (FDM) Thermoplastics, eutectic metals
Stereolithography (SLA) Photopolymer
Laminated object manufacturing (LOM) Paper
Electron beam melting (EBM) Titanium alloys
3D printing (3DP) Various Materials
14
