A very discriptive ppt on 3D printing,it got all information needed.

1. A Technical Seminar on
‘33DD-- PPRRIINNTTIINNGG’
For
B.E. (Mechanical Engineering)
Mandar Gadkari(III B)
Under the Guidance of
Prof . Praful Shirpurkar
Dept. of Mechanical Engineering
Dr. Babasaheb Ambedkar College of Engg. & Research
Session : 2014-15

2. IINNTTRROODDUUCCTTIIOONN
3D printing is a form of additive manufacturing
technology where a three dimensional object is
created by laying down successive layers of material.
It is also known as rapid prototyping, is a mechanized
method whereby 3D objects are quickly made on a
reasonably sized machine connected to a computer
containing blueprints for the object. This
revolutionary method for creating 3D models with the
use of inkjet technology saves time and cost by
eliminating the need to design; print and glue
together separate model parts. The basic principles
include materials cartridges, flexibility of output, and
translation of code into a visible pattern.

4. HHOOWW DDOOEESS IITT WWOORRKK
 Processing:

5. Working Principle

6. First super fine stainless steel powder is put into the box of 3D printer, Then the
machine spread the a layer of stainless still powder on the platform where
3D object is to made , tubes carry a binding substance from container to
machines print head. The binder acts like a weak glue and it is ejected in
very narrow jets by the print head. As the print head head moves back and
fourth on stainless steel powered bed ,it eject glue on exact location
specified by the computer .As the layers printed by print head goes on
finishing, a powerful heater attached above the print head ensures the layer
is completely dry. A roller applies a new thin layer of powder and the 3D
printer applies binder to it, this builds the object from bottom up. Thus the
process goes on for several hours . Once the layering is done the box in 3D
printer is taken to oven where it is heated for particular time period as
required, this will evaporate all the moisture present and make binder bond
strong , After that the remaining powdered is vacuum out and the object
emerges out. The cleaning action is performed on the object very carefully
as the object is still fragile and can be crushed with bare hands

7.  In this process arrangement is made to infuse brass with the object prepared by
performing moulding and casting like process in which sand is not ,but a substance
which will give support to object prepared also not interfere or react with brass
( Alumina oxide grit , may vary according to the type of metal used ). Then the object
is taken to a furnance where it will be heated to 2000 F up to 24 hours, this melts
the bronze which get suck upped to object like water by sponge . Infused with
bronze the object is a solid metal ,thus object is ready can be polished or coated by
gold to match any demand .the 3D metal printer can make various design with great
accuracy and in very less time .

10. AAPPPPLLIICCAATTIIOONNSS

11. CCAAPPAABBIILLIITTIIEESS
As anticipated, this modern technology has smoothed the path for
numerous new possibilities in various fields. The list below details the
advantages of 3D printing in certain fields.
1. Product formation is currently the main use of 3D printing technology.
These machines allow designers and engineers to test out ideas for
dimensional products cheaply before committing to expensive tooling
and manufacturing processes.
2. In Medical Field, Surgeons are using 3d printing machines to print body
parts for reference before complex surgeries. Other machines are used
to construct bone grafts for patients who have suffered traumatic
injuries. Looking further in the future, research is underway as
scientists are working on creating replacement organs.
3. Architects need to create mockups of their designs. 3D printing allows
them to come up with these mockups in a short period of time and with a
higher degree of accuracy.
4. 3D printing allows artists to create objects that would be incredibly
difficult, costly, or time intensive using traditional processes.

12. CCOOMMPPLLEEXX SSTTRRUUCCTTUURREE
33DD--PPrriinntteerrss aarree vveerryy hheellppffuull iinn ccrreeaattiinngg ccoommpplleexx
aarrcchhiitteeccttuurraall ssttrruuccttuurree..

13. MMEEDDIICCAALL UUSSEE
LLaauurraa OOlliivviieerrii,, aa ppeeddiiaattrriicc
ccaarrddiioollooggiisstt aatt tthhee CChhiillddrreenn''ss
NNaattiioonnaall MMeeddiiccaall CCeenntteerr iinn
WWaasshhiinnggttoonn DDCC ((wwhhiicchh ssppeenntt
$$225500,,000000 oonn tthhee 33DD pprriinntteerr)) ssaayyss
tthhaatt tthheessee rreepplliiccaa hheeaarrttss aarree iiddeeaall
ffoorr ddrryy rruunnss ooff ccoommpplleexx ooppeerraattiioonnss,,
aalllloowwiinngg tthhee ssuurrggeeoonn ttoo sseeee
bbeeffoorreehhaanndd tthhee eexxaacctt aannaattoommiiccaall
llaannddssccaappee tthheeyy wwiillll hhaavvee ttoo nnaavviiggaattee..

14. New technologies
using Unmanned
Aircraft Vehicles
(UAV) could create
a new, cost-effective
and
reliable
monitoring service.
Researchers at
University of
Southampton, UK
have created a
new 3D printed
drone, called
2Seas, that could
soon be used by
maritime security
organizations. The

16. AADDVVAANNTTAAGGEESS
 RRAAPPIIDD PPRROOTTOOTTYYPPIINNGG:: 33DD pprriinnttiinngg ggiivveess ddeessiiggnneerrss tthhee aabbiilliittyy
ttoo qquuiicckkllyy ttuurrnn ccoonncceeppttss iinnttoo 33DD mmooddeellss oorr pprroottoottyyppeess
((aa..kk..aa..,, rraappiidd pprroottoottyyppiinngg))..
 CClleeaann pprroocceessss.. WWaassttaaggee ooff mmaatteerriiaall iiss nneegglliiggiibbllee..((oorraall ....))
 CCoommpplleexx sshhaappee ccaann bbee pprroodduucceedd ..
 EEAASSYY TTOO UUSSEE NNoo sskkiilllleedd ppeerrssoonn nneeeeddeedd..
 RREEDDUUCCEE DDEESSIIGGNN CCOOMMPPLLEEXXIITTYY
 CCHHEEAAPP CChheeaappeerr pprroocceessss tthhaann aannyy ootthheerr pprroocceessss..((oorraall……))
 PPeeooppllee iinn rreemmoottee llooccaattiioonnss ccaann ffaabbrriiccaattee oobbjjeeccttss tthhaatt wwoouulldd
ootthheerrwwiissee bbee iinnaacccceessssiibbllee ttoo tthheemm..

17. DDIISSAADDVVAANNTTAAGGEESS
 PPrroocceessss iiss ssllooww..
 LLiimmiitteedd mmaatteerriiaall uussee
 33--DD pprriinntteerrss aarree ssttiillll eexxppeennssiivvee..
 SSiizzee hhuurrddllee
 AAlltthhoouugghh 33--DD pprriinntteerrss hhaavvee tthhee ppootteennttiiaall ooff
ccrreeaattiinngg mmaannyy jjoobbss aanndd ooppppoorrttuunniittiieess,, tthheeyy mmiigghhtt
aallssoo ppuutt cceerrttaaiinn jjoobbss aatt rriisskk ..
 MMiissuussee ooff tteecchhnnoollooggyy--33dd PPRRIINNTTEERR AARREE UUSSEEDD
EEXXTTEENNSSIIVVEELLYY FFOORR MMAAKKIINNGG AAMMMMOO LLIIKKEE
GGUUNNSS..

19. IINN FFUUTTUURREE
 WWiitthh ttooddaayy''ss 33DD pprriinntteerrss,, iiff yyoouu lloossee yyoouurr TTVV rreemmoottee''ss
bbaatttteerryy ccoovveerr yyoouu ccaann pprriinntt aa rreeppllaacceemmeenntt bbaatttteerryy ccoovveerr..
WWiitthh ttoommoorrrrooww''ss,, iiff yyoouu lloossee yyoouurr rreemmoottee,, yyoouu''llll bbee aabbllee ttoo
pprriinntt aa nneeww rreemmoottee..
 33DD pprriinntteerrss aarree aallwwaayyss ggeettttiinngg cchheeaappeerr aanndd bbeetttteerr..
 TThheerree iiss ccuurrrreennttllyy rreesseeaarrcchh ggooiinngg oonn ttoo ccrreeaattee 33DD pprriinntteerrss
tthhaatt ccoouulldd pprriinntt oouutt oorrggaannss ffoorr ppeeooppllee iinn nneeeedd ooff aa
ttrraannssppllaanntt..
 WWiitthhiinn aa ddeeccaaddee,, 33DD pprriinntteerrss wwiillll bbeeccoommee ccoommmmoonnppllaaccee iinn
hhoouusseess..
TThhee bbeenneeffiittss ooff ssuucchh tteecchhnnoollooggyy aarree eennddlleessss..

20. CCOOSSTTSS OOFF 33DD PPRRIINNTTEERRSS

21. 1. en.wikipedia.org/wiki/3D_printing
2. How the stuffs work:-
http://computer.howstuffworks.com/3-d-3. Makerbot:- http://www.makerbot.com/
4. http://www.3dprinter.net/reference/wh
at-is-3d-printing