3D printing
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#1
24-02-2009, 01:13 AM


Three-dimensional printing is a method of printing a virtual 3D model onto a 2-D object. For applying a 2-D image on a 3-D surface see pad printing. 3D printing is a category of rapid prototyping technology. 3D printers typically work by 'printing' successive layers on top of the previous to build up a three dimensional object. 3D printers are generally faster, more affordable and easier to use than other additive fabrication technologies
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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jagan g joseph
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#2
17-07-2010, 02:04 PM

can u send me the full seminar and presentation reprt of 3D printing
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project report helper
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22-09-2010, 02:17 PM

More Info About 3D printing


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arun sharma
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#4
02-07-2011, 09:09 PM

give me the report of 3d printng
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ronaldsmack
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#5
09-08-2011, 04:37 PM

Great stuff! The details are really valuable and very helpful. Thanks for sharing with us.

3d printing | 3d printing service
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#6
10-08-2011, 10:21 AM

More Info About 3D printing


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#7
26-04-2012, 03:08 PM

3D Printing


.ppt   3DPrinting2.ppt (Size: 5.52 MB / Downloads: 29)


What is 3D printing?


It’s one rapid prototyping technologies
It creates physical models from CAD and other digital data—layer by layer
It’s widely used, especially in product designing
It reduces a lot of time and cost
It’s a developing technology


What is prototyping?


Prototyping is a cycle that producers or designing teams make models for end users to test, evaluate, or debug, and get feedbacks then revise or redesign at the pre-production or mock-up period.


What do you expect to create next?


A light bulb? A motherboard? or an iPod of the nth generation?
-Go online, pay, and download the file then…produce yourself!
-No packaging, no shipping,
no assembly lines needed!


Benefits of 3D Printing

Lower cost of prototyping
Allow more design iterations to choose from
Decreases length of the design process
3D Printers are small and affordable


Conclusion

Nothing communicates design 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 iterations as you like – with functional parts.







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fake_lover01
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28-04-2012, 02:48 AM

really very nice and informative topic for final year


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30-04-2012, 11:14 AM


to get information about the topic "3D printing" full report ppt and related topic refer the link bellow

topicideashow-to-3d-printing

topicideashow-to-3d-printing?pid=83228


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#10
22-05-2012, 10:24 AM

3D Printing: Making the Virtual Real


.docx   3D Printers.docx (Size: 2.21 MB / Downloads: 34)

Introduction

A 3D printer uses a virtual, mathematical model to construct a physical artifact. For example, a designer in the process of creating a new laptop can use a software package to create a three-dimensional model of her creation, that can be manipulated and viewed on the computer screen. The 3D printer can take the symbolic representation of this new object and use it to build a full-size, physical model that can be held and
manipulated, helping the designer to better understand the strengths and limitations of her design. An architect can turn the plans for a building into a three-dimensional model and then “print” a scale model to help him understand and communicate his design. An archaeologist can print duplicates of an important, but fragile, tool so that her students can hold it in their hands and better understand how it might have been used by an ancient civilization. A biochemist can print accurate models of DNA
molecules, enlarged by many orders of magnitude, to help students and researchers better understand nature by engaging their hands as well as their eyes in comprehending the geometry of nature. And a student of the arts can create a unique object that would be difficult or impossible to build by hand.

We will not here consider other types of computer-controlled manufacturing, such subtractive machines, which work by cutting away from a larger piece of material in order to build a part.
Additive rapid prototyping machines were first introduced twenty years ago, when 3D Systems introduced the Stereolithography, or SLA machine. While these machines were remarkable for their ability to create complex parts, they were (and continue to be) large, expense, and difficult to operate. As such, they are of limited interest to most
academic institutions except for a few well-funded laboratories. However in the latenineties lower cost machines using technologies such as fused-deposition modeling
(FDM) and powder binding (defined below) began to be available in the $30,000 to $50,000 range. These machines, which can be used without special environmental controls and with a modest amount of training, are the first 3D printers by our definition.
In the evolution of rapid prototyping equipment, we have seen a history somewhat like that of the mainframe computer (SLA) and the mini-computer (early FDM and powder binding) systems. However, we are on the verge of the introduction of new systems that will cost less than $10,000, require very little training, and are capable of being operated in a typical faculty office or computer lab or home. At least one vendor has
the ambition of producing 3D printers for less than $1000 in five years. It is the thesis of this paper that as these printers achieve lower price points and accessibility, they will spring up across campuses and be used for applications yet to be imagined. Our purpose is to disseminate a basic understanding of a technology that is likely to grow dramatically in popularity within the next few years.

3D Printing: process and equipment
To use a 3D printer, you have to have something to print. In most cases, users create their models using a commercial CAD tool such as Solidworks or Rhinoceros. This complex software can be quite expensive, but as it has come into wide use academic licenses are
generally available for several hundred dollars a seat. Occasionally lower-cost software such as SketchUp, available in free and in “pro” versions can be used, but with some limitations since SketchUp was not designed to create manufacturable objects. As lower cost printers
become available, the software market is likely to broaden and new, simpler programs may become available, analogous to the drop in cost and complexity of desktop publishing software in the 1990’s. Commercial 3D CAD software also places demands on computer
processing power and memory, although the vast majority of the newer multi-core systems will be more than adequate for most modelers.
The current generation of 3D printers typically require the output from the CAD program to be stored in a format called STL, which defines a shape by a list of triangle vertices. This step is largely invisible to the user, although the output may need to go through an automated “clean
up” step to reduce anomalies that might be invisible on a screen but could impact the printing process. Then the cleaned up STL file is used to drive the 3D printer.


EDUCAUSE EVOLVING TECHNOLOGIES COMMITTEE 3D PRINTING: MAKING THE VIRTUAL REAL

3D printers work by building up parts layer by layer. Depending on the machine and the precision required, an individual layer is about 0.0035 to 0.007 inches thick. The size of an object that a particular machine can make is limited by a bounding box called its build size. For example, the powder-binder printers offered by Z Corporation have a build-size of 8 x 10 x 8 inches to 10 x 14 x 8 inches . There is considerable craft in aligning parts within the build area to achieve maximum quality and
minimum build time. Depending on the technology used, the size of the object, and the precision required, build times can run from an hour or two up to twelve hours or more. However, once the build process begins, it generally requires little or no supervision or intervention.
While there are new technologies primed for release in late 2007, as of this writing the vast majority of 3D printers used in educational institutions are either fused-deposition modeling or power binder based. This section provides a brief introduction to two of the most common systems and their capabilities.

Fused-Deposition Modeling (FDM): Stratasys Dimension FDM machines build layers by extruding a thin bead of a semi-molten plastic, usually acrylonitrile butadiene styrene (ABS) plastic. ABS is an attractive material, because it’s hard, durable, and low in toxicity. It’s familiar as the plastic used in Lego-brand toy bricks. Although it can be dyed, it’s typically used in its original off-white form. The FDM
machine heats the ABS to soften it; as it’s extruded, it begins to harden and as it does it adheres to the layer below it. Because the material comes out soft at first, any “overhanging” parts need
to have supports built into them; once the plastic hardens, the support material is removed. The Stratasys Dimension sells for approximately $20,000 to $35,000. The Dimension has a build area of 8 x 8 x 12 inches. The least expensive Dimension systems require the support
parts to be removed manually, while the more expense systems use a soluble material that’s washed away in a solvent bath. FDM machines build strong, precise objects that can be used for a wide variety of purposes. The cost for the plastic used runs about $8-10 per cubic inch.


Powder-Binder Printing: Z Corporation
Powder-binder printing works by building up layers of a plaster-like powder that is then sprayed with a liquid binder, or glue, from an ink-jet printer head. In each pass, a new layer of loose powder followed by a pass by the printer head applying the binder. If you imagine each
layer of powder as something like a piece of paper, it’s virtually the same process as ink-jet printing, except that each layer binds to the next and the powder that isn’t sprayed can later be brushed away to leave the constructed part. As the printer builds the object from the bottom to
the top, the powder can hold any overhanging parts in place, so no supports are needed. Once the parts are printed, they are removed from the bed of powder and dusted off, and unused powder can be recycled.
Z Corporation, or Z Corp as it’s often known, offers printers in the range of approximately $25,000 to $50,000. All models can build excellent parts; the highest price system can build the largest models (10 x 14 x 8 inches) and can add color. Z Corp printers generally build parts
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#11
24-07-2012, 12:06 PM

3D printing


ABSTRACT

With needs and the increasing expectation, man has always developed the new techniques to fulfill their needs. Design is an activity that facilitates the realization of new products and processes through which technology satisfies the needs and aspiration of the society.

With the advancement and acceptance of Concurrent Engineering to speed up and improve product development process it require a systematic approach to the integrated, simultaneous design of products and their related processes, including manufacture and support. Rapid Prototyping is the one versatile tool that meets this requirement.

The term rapid prototyping (RP) refers to a class of technologies that can automatically construct physical models from Computer-Aided Design (CAD) data. These "3D printers" allow designers to quickly create tangible prototypes of their designs, rather than just two-dimensional pictures. Processes in this area are continuing to evolve but typically build objects in a series of layers between .01 and 1.0mm thick. This allows for the precise construction of complex geometry, which enables designers to explore forms that would previously have been too complex or expensive to model by hand.

The paper covers the basic processes, types and applications of 3D printing technology and put a future vision that the 3D printing technology will revolutionize the manufacturing processes.
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#12
15-05-2013, 12:37 PM

3D Printing



.ppt   3D Printing.ppt (Size: 947 KB / Downloads: 17)

The Inventor

The technology for printing physical 3D objects from digital data was first developed by Charles Hull in 1984. He named the technique stereolithography and obtained a patent for the technique in 1986. The same year, he founded 3D Systems and developed the first commercial 3D Printing machine.

Prototyping technologies and their base materials

3D Printing (3DP): Various materials, including resins
3D Ceramic Printing: Various clay and ceramic materials
Selective laser sintering (SLS): Thermoplastics, metals, sand and glass
Fused Deposition Modeling (FDM): Thermoplastics
Stereolithography (SL): Photopolymer
Electron Beam Melting (EBM): Titanium alloys

Selective Laser Sintering

This is an additive manufacturing technique that uses a high power laser to fuse small particles of plastic, metal, ceramic or glass powder into the desired 3-D shape.
The laser selectively fuses the material by scanning cross sections generated from a 3-D digital description of the part, for example a CAD file.

Fused Deposition Modeling

FDM works on an "additive" principle by laying down material in layers. A plastic filament or metal wire is unwound from a coil and supplies material to an extrusion nozzle. The nozzle is heated to melt the material and can be moved horizontally and vertically. The part, or model, is produced by extruding mall beads of thermoplastic material to form layers and the material hardens immediately after extrusion from the nozzle

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.

Electron Beam Melting

This solid freeform fabrication method produces fully dense meta, parts directly from metal powder. The EMB machine reads data from a 3-D CAD model and lays down successive layers of powdered material. The layers are melted together with the help of a computer controlled electron beam. This way it builds up the parts. The process takes place under a vacuum, which makes it suited to manufacture parts made out of reactive materials

New Developments

First ever 3-D printed car.
Urbee is the first prototype car ever to have its entire body 3D printed with an additive process. All exterior components, including the glass panel prototypes, were created using Dimension 3D Printers and Fortus 3D Production Systems at Stratasys' digital manufacturing service.
3-D printed Buildings?
Architect Enrico Dini is planning to build the first ever 3-D printed building with the help of fellow architects.
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