3D printing, also known as additive manufacturing, is a process of making 3D objects from a digital file by successively adding material layer by layer under computer control. It works by slicing a virtual 3D model into thin horizontal layers and then producing the object by depositing one layer at a time. Applications of 3D printing include producing design prototypes, models for education, and customized medical implants and prosthetics. While the technology offers advantages like customization, there remain challenges to address such as cost, speed, and intellectual property issues.

1. 3D PRINTING
BY: RAHUL KATIYAR
CSE-48-13
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• What is 3D printing?
• Additive Manufacturing
• How it works ?
• Work Flow
• General Principles
• Methods and Technology
• Applications
• challenges
• Future scope
• Conclusions
Contents

3. • A method of Additive Manufacturing that adds material to an
object layer by layer to create the final product.
• I t was first developed by Charls Haul in 1984.
• It is also called RAPID PROTOTYPES
• 3D printing takes digital input in
the form of Computer Aided Design
(CAD) model and creates solid,
three dimensional parts through
an additive, layer by layer
process.
What is 3d printing?
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4. 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,
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5. HOW IT WORKS ?
• A virtual design of the object is created.
• CAD (Computer Aided Design) uses a 3D
modeling program or 3D scanner for virtual
design.
• The software slices the final model into
hundreds or thousands of horizontal layers.
• The printer creates the object layer by layer,
resulting in one three dimensional object.
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6. WORK FLOW :
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7. General Principles
1.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.1
1. Modeling
2. Printing
3. Finishing
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8. General Principles
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.
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9. General Principles:
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
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10. Methods & Technologies
Several ways to realize 3D objects –
 Selective laser sintering (SLS) : uses a high power laser to
fuse input materials like plastic, metal, glass, etc. It scans the
powdered material layer by layer.
 Fused deposition modelling (FDM) : uses a plastic filament
or metal wire as input material to an extrusion nozzle. The nozzle
is heated to melt the material and can be moved in both horizontal
and vertical directions by CAM(computer added manufacturing). The
material hardens immediately after extrusion from the nozzle.
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11.  Stereolithography (SLA) :
photopolymerization is used to
produce a solid part from a liquid.
This technology employs a vat of
liquid ultraviolet curable
photopolymer resin and an
ultraviolet laser to build the object’s
layers one at a time. UV Laser
solidifying the pattern.
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12. APLLICATONS OF 3D PRINTING
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13. APLLICATION OF 3D PRINTING :
Design Prototypes:
•3-Dimensional Printing concept model, functional prototypes and
presentation models for evaluating and refining design,
including Finite Element Analysis (FEA) results and packaging.
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14. APLLICATION OF 3D PRINTING :
Education:
•Engage students by bringing digital concepts into the real world,
• turning their ideas into real-life 3D color models that they can actually hold in
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15. APLLICATION OF 3D PRINTING :
Healthcare:
•Rapidly produce 3D models to reduce operating time,
enhance patient and physician communications, and improve patient outcomes.
Bionic Ears
3D printed Jaw
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16. Challenges
1. Cost: – cost for a personal printer is $500. The cheapest
Commercial printer can be commissioned at $30,000
3. Speed: Printing speed is s…l…o…w.
2. Intellectual property rights
4. criminals use 3D Printers to create illegal
products
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17. FUTURE OF 3D PRINTING
• The possibilities are endless
• We are only starting to realize the potential
this technology will have on everything
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4D PRINTING

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• 4D printing is a variety of 3D printing.
3D PRINTER + SMART MATERIALS
4D PRINTING

19. 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.
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