Introduction of different types of 3D printing technology, and the usage in different areas

1. Introduction of 3D Printing
Slide prepared by : Parker Leung

2.  Tools to ‘create’ physical
objects from a virtual 3D
model
 Additive manufacturing
process, widely uses in
design and prototyping
What is 3D Printer?

3.  ‘Add’ small materials together to form objects
 Can produces difficult shapes
 Less scraps after manufacturing
Additive manufacturing

4. ‘Layer by Layer’

5.  First 3D printer invent in
1984 year, by Chuck Hull
(3D Systems Corporation)
 Mainly used in industrial
prototyping over 20+
years.
History of 3D printing (1)

6.  In 2005, because patent expired of
FDM, Dr. Adrian Bowyer of
University of Bath, founded a open
source 3D printer project called
“Rep-Rap”
 The first open source 3D printer –
“Darwin” launch on 2007
History of 3D printing (2)

7. Fused Deposition Modeling (FDM)
FDM uses a reel of plastic filament
and extruding it through a small
diameter nozzle and fused together
to form objects.

8. Stereolithography (SLA)
SLA uses a laser and a set
of mirrors to solidify the
layer of UV light curable
resin.
Since laser beam is narrow
enough, output quality is
better than FDM.

9. Binder jetting / Polymer jetting
Binder jetting uses liquid
adhesive to binding the
selected polymer powder
to form a physical object.
With colour adhesive, it
can form colour objects.

10. Selective Laser Sintering (SLS)
SLS uses a laser to melt the
selected metal / polymer
powder and form a physical
object.
This method usually uses
building metal objects.

11.  Usually print with plastic filaments, likes:
 ABS – Strong and last long, bad smell during printing
 PLA – Made from corn, bio degradable
 PVA – Water soluble, uses to print ‘supports’
 Nozzle size from 0.25mm up to 0.8mm
 Layer thickness from 0.05mm up to 0.4mm
More about FDM technology

12. Single vs Multiple hot ends

13. Mutli-color FDM

14.  Design with less overhang and bridges ( < 45 degree)
FDM Printing technique (1)

15.  Use ‘support’ structures
if necessary
FDM Printing technique (2)

16.  A ‘ horizontal’ base – use less supports
FDM Printing technique (3)

17.  From design to fabricate directly
 Build on demand
 Make Revolution / 3rd Industrial Revolution
Why we need 3D Printing?

18. Manufacturing / Building
Bio Medical
Food
Wearable / Jewellery
DIY Design / Makers
Usage of 3D printing

19. 3D Printed Vehicle

20. 3D Printed House

21.  FDM Print with “Conductive Plastic Filament”
 Consist of graphite
 Print electronic circuit directly
inside the structure
 In future, PCBs (2D circuit)
may replaced by 3D circuit
3D Printed Electronics

22. Food Printing

23. Medical uses

24. 3D Printed Wearable

25.  Scan real objects,
to get “cloud of points”
 Link up “cloud of points”
to form “faces”
 Transform into
3D modeling file
How 3D Scanning works?

26.  Autodesk 123D Catch
(http://www.123dapp.com/catch)
 Skanect
 Structure.io (with iPad)
 DIY David 3D scanner
Different 3D scanning tools

27. What is 123D Catch?

28. How to use Skanect?