Md. Rakibul Islam

Presented by

Team

Constant

3-D Printing

Rakibul

OUTLINE Introduction History What is 3-d printing ?? General principal How it work?? Different method of 3-d Printing Advantage Disadvantage Conclusion References

INTRODUCTION

3D printing is a modern technology in which 3 dimensional objects are printed from digital data

Three dimensional object is created by laying down successive layers of material

HISTORY

The technology for printing physical 3D objects from digital data was first developed by Chuck Hull in 1984. He named the technique as Stereo lithography and obtained a patent for the technique in 1986

WHAT IS 3D PRINTING?3D printing is a form of additive manufacturing in which components are fabricated in an additive fashion by adding successive layers of material together

It is also known as:Rapid prototypingAdditive manufacturing

THE BASIC IDEA

THE BASIC IDEA If you can slice an object You can glue the slices back together 3D printing builds 3D objects layer by

layer 100-200 layers per inch And it is slow--a Lego block can take an

hour to make But it’s getting better—rapidly!

ADDITIVE MANUFACTURING:

The term additive manufacturing refers to technologies that create objects through a sequential layering process. Objects that are manufactured additively can be used anywhere throughout the product life cycle

GENERAL PRINCIPLES

• Modeling• Printing• Finishing

MODELING Additive manufacturing takes virtual

blueprints from computer aided design (CAD) or animation modeling software and "slices" them into digital cross-sections for the machine to successively use as a guideline for printing.

PRINTING To perform a print, the machine reads

the design and lays down successive layers of liquid, powder, or sheet material to build the model from a series of cross sections. These layers, which correspond to the virtual cross sections from the CAD model, are joined together or automatically fused to create the final shape. The primary advantage of this technique is its ability to create almost any shape or geometric feature.

FINISHING Though the printer-produced resolution

is sufficient for many applications, printing a slightly oversized version of the desired object in standard resolution, and then removing material with a higher-resolution subtractive process can achieve a higher-resolution

HOW 3D PRINTING WORK

A person creates a 3D image of an item using a computer-

aided design (CAD)

software program.

The CAD informat

ion 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.

DIFFERENT METHODS• Stereo lithography• Selective laser sintering (SLS)• Fused deposition modeling (FDM)• Ink-Jet 3D printing

STEREOLITHOGRAPHY Stereolithography is a process for

creating three-dimensional objects using a computer-controlled laser to build the required structure, layer by layer. It does this by using a resin known as liquid photopolymer that hardens when in contact with the air

SELECTIVE LASER SINTERING Selective laser sintering (SLS) is an additive

manufacturing technique that uses a high power laser to fuse small particles of plastic, metal (direct metal laser sintering),ceramic or glass powders into a mass that has a desired 3-dimensional shape

FUSED DEPOSITION MODELING (FDM)• Commonly used for modeling,

prototyping, and production applications.

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

INK-JET 3D PRINTING It creates the model one layer at a time

by spreading a layer of powder and inkjet printing binder in the cross-section of the part.

It is the most widely used 3-D Printing technology these days

VALUE PROPOSITIONS OF 3D PRINTING Fabrication on demand Shorter product development time due

to rapid prototyping Less reliance on logistics

Mass customization Caters to each individual’s wants and

needs instead of mass production and consumption

ADVANTAGES

print movable parts print items in remote locations ability to send items over internet and

print out at home plastic used is strong

DISADVANTAGES  no regulations on what can be made

example weapons kids could print out dangerous items provide advantages for criminals counterfeiting expensive 

MOST INTERESTING EXAMPLE FOR OUR REAL LIFE WHICH IS MADE BY 3D PRINTING

FASHIONABLE PLASTER This 3D-printed cast to

help repair broken bones may be the future of medical orthopedic casts. 3D-printed casts also bring out the positive potential of this emerging technology

ARTIFICIAL ARMS FOR DISABLED

Richard Van As, a South African carpenter, assembles a Robohand and fits it to Liam Dippenaar. Liam was born without fingers on his right hand. Makerbot provided them with the 3D printing technology that they used to print the parts for the Robohand.

BIONIC EAR Scientists, including an

Indian-origin researcher, have created a 3D-printed bionic ear that can "hear" radio frequencies far beyond the range of normal human capability. Using off-the-shelf printing tools, the scientists at Princeton University explored 3D printing of cells and nano particles, creating the bionic ear.

GROW YOUR OWN ORGANS

Surgeon Dr. Anthony Atala demonstrated during TED an early-stage experiment that could someday solve the organ-donor problem: a 3D printer that uses living cells to print out a transplantable kidney

POTENTIAL NEW BUSINESSES

Printing shops Printing Leasing 3-d Printing solutions

for self service Online printing

services

CONCLUSION Nothing communicates ideas faster than

a three-dimensional part or model. With a 3D printer you can bring CAD files and design ideas to life – right from your desktop. Test form, fit and function – and as many design variations as you like – with functional parts

REFERENCES

Google You tube Wikipedia

QUESTIONS..??

Rakibul