3D printing is a form of additive manufacturing that creates 3D objects by laying down successive layers of material using CAD software to guide the process. CAD software allows for accurate designs and documentation of parts, while 3D printing techniques like stereolithography, fused deposition modeling, selective laser melting, and laminated object manufacturing build objects layer by layer from digital models. While offering advantages like customization and reduced waste, 3D printing also faces limitations in materials used, maximum size, and potential safety issues.

2. 3D printing is a form of additive
manufacturing technology where a three
dimensional object is created by laying down
successive layers of material.

3. Creates a
3D image
using CAD
software. CAD
informatio
n sent is
sent to
the
printer.
As per
instructions
, printer
forms the
object by
“additive

4. Computer–aided design (CAD)
A software to create 2D or 3D graphical representations
of physical objects.
Used to design curves and figs in 2D space ; or curves , surfaces
and solids in 3D space.
Benefits of CAD
• CAD software offers greater accuracy, so errors are reduced.
A CAD system provides easier, more robust documentation of the design,
including geometries and dimensions, bills of materials, etc.
• CAD software offers easy re-use of design data and best practices

7. Stereolithography(SLA)
Fused deposition modeling (FDM)
Selective laser melting (SLM)
Laminated object manufacturing (LOM)

8. Stereolithography (SLA)
Process that works by focusingan ultraviolet(UV)laseronto a vatof photopolymerresin.
The UV laser is used to draw a pre-programmed design or shape on to the surface of the
photopolymer vat.

9. FDM Technology build objects layer by layer from the very bottom up by heatingandextruding
thermoplasticfilament.

10. Selective laser melting (SLM) is a technique a high-power laser beam that fuses and melts metallic powders
together.

11. In LOM process, layersof adhesive-coatedpaper,plasticor metallaminatesare fused together using heat and
pressure and then cut to shape with a computer controlled laser or knife.

15. Fewer Manufacturing Jobs
Limited Materials
Dangerous Items
Size

16. http://www.3ders.org/
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