3D printing is a form of additive manufacturing that creates 3D objects by laying down successive layers of material. The main 3D printing techniques are stereolithography, fused deposition modeling, and selective laser sintering. 3D printing has applications in product prototyping, metal casting, geospatial designs, and art. It allows for increased part complexity, digital design and manufacturing, and relatively low cost and time of production. However, 3D printing has high costs for domestic use and may have implications for intellectual property rights.

1. Instructed on: 17-Feb-2012 | Session: #05
By: Mohanad Yehia
Topic Code: TCW-04-2012
All Copy Rights Saved to the 7th Students’ Conference on Communication and Information Based in the Faculty of Computers and Information Cairo University – Egypt 2011/2012 www.scci-cu.com

2.  What is 3D printing?
 3D printing process.
 3D printing techniques.
 3D printing applications.
 Advantages.
 Against.

3. is a form of additive manufacturing technology
where a three dimensional object is created by
laying down successive layers of material. It is also
known as rapid prototyping.

5. start
Layer of powder deposit
automatically
Print head applies resin
to powder layer
Powder layer dries
almost immediately
Add another Yes
layer?
No
Remove completed
model
Finish

6. Spread a layer of powder Print cross section
Print a layer of powder

7.  Stereo lithography (SLA).
 Fused deposition modeling (FDM).
 Selective laser sintering (SLS).

8.  A perforated platform is positioned below
the surface of a liquid photo curable polymer.
 A UV laser beam traces the first slice on the
surface of this liquid, causing a very thin layer
of photopolymer to harden.
 Another slice is then created, and so on.

10. Here a hot thermoplastic is extruded from a
temperature-controlled print head to
produce fairly robust objects to a high degree
of accuracy.

12. This builds objects by using a laser to
selectively fuse together successive layers of
a cocktail of powdered wax, ceramic, metal,
nylon or one of a range of other materials.

14.  Product formation (prototyping).
 Metal casting.
 Geospatial designs.
 The use of 3D scanning technologies allows the
replication of real objects.
 Architects need to create mockups of their
designs.

15.  3D printing allows artists to create objects that
would be incredibly difficult, costly, or time
intensive using traditional processes.
 In Medical Field, Surgeons are using 3d printing
machines to print body parts for reference
before complex surgeries.
 Looking further in the future, research is
underway as scientists are working on creating
replacement organs.

16. 3D printed
bike.

17. 3D printed
instruments

18. 3D printed
mummy

19. 3D printed
shoe

20. 3D printed
toys

21. 3D printed
architecture

22. 3D printed
architecture

23. 3D printed
face

24. 3D printed
limbs

25.  Increased part complexity.
 Digital design and manufacturing.
 Relatively low cost and time.
 Instant production on a global scale.
 Waste reduction (Green technology).

26.  High cost for domestic use.
 3D printing technology may have
implications for artistic copyright, design
right and trade marks.
 Bad option for common designs.