3D Printing

By: Mohanad Yehia

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

Topic Code: TCW-04-2012

Instructed on: 17-Feb-2012 | Session: #05

What is 3D printing?

3D printing process.

3D printing techniques.

3D printing applications.

Advantages.

Against.

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.

start

Layer of powder deposit automatically

Print head applies resin to powder layer

Powder layer dries almost immediately

Add another layer?

Remove completed model

Finish

Yes

No

Print a layer of powder

Print cross section Spread a layer of powder

Stereo lithography (SLA).

Fused deposition modeling (FDM).

Selective laser sintering (SLS).

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.

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

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.

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.

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.

3D printed bike.

3D printed instruments

3D printed mummy

3D printed shoe

3D printed toys

3D printed architecture

3D printed architecture

3D printed face

3D printed limbs

Increased part complexity.

Digital design and manufacturing.

Relatively low cost and time.

Instant production on a global scale.

Waste reduction (Green technology).

High cost for domestic use.

3D printing technology may have implications for artistic copyright, design right and trade marks.

Bad option for common designs.