The document summarizes Bhumika Marolia's seminar presentation on 3D printing. It begins with an overview of 3D printing and its principles, then describes various 3D printing methods like selective laser sintering, stereolithography, and fused deposition modeling. Applications discussed include concept modeling, functional prototyping, manufacturing tools, and end-user parts. The future scope of 3D printing includes complex engine parts, on-demand parts in space, and 3D printed homes. Advantages are customization and rapid production, while disadvantages include intellectual property issues and limitations of size and materials.

1. Seminar Presentation
on
3D PRINTING
By:
Bhumika Marolia

2. CONTENTS
Overview of 3D Printing
General Principles
Methods of 3D Printing
3D Printing Materials
Applications
Future Scope
Advantages and disadvantages
Conclusion
References

3. Overview of 3D Printing
“3D printing” or “Additive Manufacturing” takes digital input in the
form of Computer Aided Design (CAD) model and creates solid,
three dimensional parts through an additive, layer by layer process.

4. Types of Manufacturing
Additive Manufacturing
Subtractive Manufacturing
Additive Manufacturing could
reduce energy use by 50% and
reduces material costs by up to
96% compared to traditional
manufacturing.

5. General Principles
1.Modelling:It takes virtual blueprints from modeling
software and “slices” them into digital cross-sections for
the machine to successively use as a guideline for
printing.
2.Printing:To perform a print, the machine reads the
design from an .stl file and lays down successive layers
of liquid, powder, paper or sheet material to build the
model from a series of cross section.
3.Finishing

6. How Does It Work?
A person creates a
3D image of an item
using a CAD
software program.
The CAD
information
is sent to
the printer.
The printer forms the
item by depositing the
material in layers—
starting from the
bottom layer—onto a
platform. In some
cases light or lasers
are used to harden the
material.
How Does It Work?

7. Methods of 3D Printing
1.Selective Laser Sintering(SLS)
2.Stereolithography
3.Fused Deposition Modeling(FDM)
Stereolithography
FDM

8. Selective Laser Sintering
It is an additive manufacturing technique that uses a high
power laser( for eg. CO2 laser) to fuse small particles of
plastic, metal, ceramic or glass powders into a mass that
has a desired 3D shape.

9. Stereolithography
It is an additive manufacturing process that works by
focusing an ultraviolet (UV) laser on to a vat
of photopolymer resin.

10. Fused deposition modeling
It build parts layer-by-layer from the bottom up by heating and
extruding thermoplastic filament. Used for modelling,
prototyping and production applications.

11. FDM

12. 3D Printing Materials
1.Plastic FilamentAcrylonitrile Butadiene
Styrene (ABS)
PLA Polylactic acid or
polylactide (PLA, Poly)
Flexible Plastic (TPE) Nylon

13. 2.Metals
Brass, Bronze, Platinum, Silver and Gold
Steel Aluminum

14. Applications
1.Concept Modeling :This lets
small design and engineering firms
extend their reach by testing out
more ideas .
2.Functional Prototyping: It helps
in creating amazingly realistic
prototypes with the look and feel of
a real product.
Example:
Lamborghini, while developing its
new flagship model Aventador has
made extensive use of 3D printing
technology to build a
functional prototype of the car.

15. 3.Manufacturing Tools:
Quick, low-volume tooling
and custom fixtures give
manufacturers the flexibility
to embrace more opportunities.
4.End-User Parts
5.Food
6.Fashion & Retail

16. 7.Medical:
Artificial Arms for Disabled
Secrets of the HeartMedical Equipments
Bioprinting Tissues and organs

17. Future Scope
1.Complex Engine parts.
2.On demand parts in Space.
3. Aircraft Wings.
4. 3D Printing as a Service(3DPaaS)

18. 5.3D-printed Lunar Base 6.Design your own clothes
7.Print your home

19. Advantages and Disadvantages
Advantages:
Ability to customize products
Rapid production of prototypes.
Low cost of production.
No storage cost
Quick availability of organs.

20. Disadvantages:
Intellectual property issues
Unchecked production of dangerous items
Limitations of size
Limitations of raw material
Cost of printers

21. Conclusion
3D Printing is an expanding technology which may
soon start an industry in which everyone has the
possibility of being a manufacturer.
3D Printing has a lot of possible benefits to society,
although the products created must be regulated.

22. References
www.http://on3dprinting.com/wpcontent/uploads/2012/0
8/20120806-Infographic-How-3D-Printing-Works-
Preview.jpg
http://www.oshup.com/advantages-and-disadvantages-
of-3d-printing-technology/
http://thefutureofthings.com/4664-the-future-of-3d-
printing/
http://dupress.com/articles/additive-manufacturing-3d-
opportunity-in-aerospace/
http://3dprintingindustry.com/3dp-applications/