Communication SkillsBy:

Hashim Khan

Roll Number:

DDP-SP13-BEC-053

Subtractive Manufacturing

Creates a product by removing sections from a

block of material

Generates waste through excess material that is

removed

Limited design capabilities

Examples

1. Lathe

2. CNC

3D Printing!

Agenda

Introduction

Applications

Research

Video Presentation

Some Facts About 3D Printing:

3d printing or additive printing is a process

that creates a product through adding

materials layer by layer.

The process uses digital files (CAD files

etc.)

Each of the layers can be seen as a thinly

sliced horizontal cross-section of the

eventual object.

Working:Cad file i.e. you actually need to design

your concept on a computer viaappropriate software.

OR

You can scan the object using a 3Dscanner. This will generate the cad filefor your use by creating a 3D digital copyof the object.

Then you put this file into anothersoftware that slices the digital object intohundreds or thousands of horizontallayers.

When this prepared file is uploaded

in the 3D printer, the printer creates

the object layer by layer. The 3D

printer reads every slice (or 2D

image) and proceeds to create the

object blending each layer together

with no sign of the layering visible,

resulting in one three dimensional

object.

BUT!!!

Not all 3D printers use the same technology

to realize their objects.

Selective laser sintering (SLS) and fused

deposition modeling (FDM) are the most

common technologies using this way of

printing.

Another method of printing is to lay liquid

materials that are cured with different

technologies. The most common technology

using this method is called stereo lithography

(SLA).

Selective Laser Sintering (SLS) This technology uses a high power laser to fuse small

particles of plastic, metal, ceramic or glass powders into amass that has the desired three dimensional shape.

Fused Deposition Modeling

The FDM technology works using a plastic filament ormetal wire which is unwound from a coil and suppliesmaterial to an extrusion nozzle which can turn the flow onand off. The nozzle is heated to melt the material and canbe moved in both horizontal and vertical directions by anumerically controlled mechanism, directly controlled by acomputer-aided manufacturing (CAM) software package.The object is produced by extruding melted material toform layers as the material hardens immediately afterextrusion from thenozzle.(Thermoplastics (e.g. PLA, ABS), HDPE, eutectic metals, ediblematerials, Rubber (Sugru),Modeling clay, Plasticine, RTV silicone, Porcelain, Metal

clay (including Precious Metal Clay)

• Prototyping/CAD

• Architecture

• Paleontology (Restructuring Fossils)

• Biotechnology

• ETC!!!

Applications

So, What Is The Future?

A lot of research is being done on this

subject because it’s applications are

tremendous and manifold, also no other

method provides us such versatility with

manufacturing as compared with 3D printing,

actually nothing even comes close…

Also it is very popular with the hobbyists

which takes it to a whole new level because

of the market being generated for this kind of

product both as standalone and

derivatives…

Research

Research regarding the materials being

employed by this technique is a hot topic

among scientists these days…

Let’s discuss some available commercially!

ABS PLUS

It is a production grade thermo plastic that is

used to print objects. It fuses after heating

and thus creates an object.

Poly Jet Photopolymers (By Stratasys)

Poly Jet photopolymers offer fine detail along

with final-product realism surpassing all other

3D printing technologies. They exhibit a

chameleon-like ability to simulate clear,

flexible and rigid materials and engineering

plastics — and even combine many colors

and material properties into one model.

Specialty materials include Bio-compatible

and Dental. -

Proto Plant, announced two new materials

for its line of exotic 3D printer filament:

Stainless Steel PLA and Magnetic Iron PLA.

Engineered for printability on home 3D

printers, Proto-pasta Stainless Steel PLA can

be polished or brushed for a brilliant metallic

shine, or left unfinished for a cast metal

appearance. Great for making realistic

terminator replicas or giving prototypes an

industrial design feel and aesthetic.

Philips brand Smit Röntgen has announced

that it is now the first company to offer

additive manufactured Tungsten parts. The

medical imaging component manufacturer is

using Powder Bed Laser Melting to create

pure Tungsten products. The

proprietary laser melting technology requires

just forty-eight hours to turn a computer

aided design file into a tangible product. Smit

Röntgen says that the technology allows for

the high volume production of pure Tungsten

parts.

Info graphics!

Food safe glazed ceramics.

Available in glossy and

satin finishes, and a variety

of colors!

Gypsum Printable with

color textures on the

surface. Feels like matte

clay!

Porcelain Anyone?

May the force be with you!

• See more at:

http://www.stratasys.com/materials#sthash.Jw

HMH8aZ.dpuf

• See more at:

http://www.stratasys.com/materials#sthash.Jw

HMH8aZ.dpuf