2. 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
6. Agenda
Introduction
Applications
Research
Video Presentation
7. 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.
8. Working:
Cad file i.e. you actually need to design
your concept on a computer via
appropriate software.
OR
You can scan the object using a 3D
scanner. This will generate the cad file
for your use by creating a 3D digital copy
of the object.
Then you put this file into another
software that slices the digital object into
hundreds or thousands of horizontal
layers.
9. 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.
12. 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).
13. Selective Laser Sintering (SLS)
This technology uses a high power laser to fuse small
particles of plastic, metal, ceramic or glass powders into a
mass that has the desired three dimensional shape.
Fused Deposition Modeling
The FDM technology works using a plastic filament or
metal wire which is unwound from a coil and supplies
material to an extrusion nozzle which can turn the flow on
and off. The nozzle is heated to melt the material and can
be moved in both horizontal and vertical directions by a
numerically controlled mechanism, directly controlled by a
computer-aided manufacturing (CAM) software package.
The object is produced by extruding melted material to
form layers as the material hardens immediately after
extrusion from the
nozzle.(Thermoplastics (e.g. PLA, ABS), HDPE, eutectic metals, edible
materials, Rubber (Sugru),Modeling clay, Plasticine, RTV silicone, Porcelain, Metal
clay (including Precious Metal Clay)
18. 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…
19.
20. 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.
21.
22. 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. -
23. 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.
24. 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.
