3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file.

2.  3D printing also known as additive manufacturing
is a process of making three dimensional solid
objects from a digital file typically by laying down
many successive thin layers of a material.
 Successive layers of material are formed
under computer control to create an object. Objects
can be of almost any shape or geometry and are
produced from digital model data 3D model or
another electronic data source.

3.  The 3D printing process turns a whole object into
thousands of tiny little slices, then makes it from the
bottom-up, slice by slice.
 Those tiny layers stick together to form a solid
object. Each layer can be very complex, meaning 3D
printers can create moving parts like hinges and
wheels as part of the same object.

4. When jumping into the world of 3D printing, it’s a
good idea to assemble a kit yourself to get a basic idea
of how they are built and how 3D printers function.
While following the instructions and putting the
parts together you’ll gradually learn all the terms and
vocabulary associated with 3D printing which will
make it easier to solve problems in a later stage.

5. Not all 3D printers use the same technology. There are
several ways to print and all those available are additive,
differing mainly in the way layers are build to create the final
object.
Some methods use melting or softening material to produce
the layers. Selective laser sintering (SLS) and fused deposition
modelling (FDM) are the most common technologies using
this way of 3D printing.
Another method is when we talk about curing a photo-
reactive resin with a UV laser or another similar power source
one layer at a time. The most common technology using this
method is called stereo lithography (SLA).

6. Applications include rapid prototyping, architectural scale
models & Marquette, and entertainment.
Examples of 3D printing would include reconstructing
fossils in palaeontology, replicating ancient artefacts in
archaeology, reconstructing bones and body parts in
forensic pathology and reconstructing heavily damaged
evidence acquired from crime scene investigations.

7. 3D printers capable of outputting in colour and
multiple materials already exist and will continue
to improve to a point where functional products
will be able to be output.
With effects on energy use, waste reduction,
customization, product availability, medicine, art,
construction and sciences, 3D printing will
change the manufacturing world as we know it.

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