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15- 3D printer

We are all familiar with the 2D printer i.e the black and white or colour printer. The photocopy of any document is printed with the printer as per the input image that was given to it. The later world expected the things to be experienced in the actual dimensional view and this led to the invention of the 3D printer.

Now, what actually is a 3D printer?

Making the desired objects of any dimensions as per the actual image that was given to the input is called as the 3D printer. The image sends the information like the height, width, depth, etc to the printer through the sensors or even manual inputs can be given. The obtained information is then processed, brought together to make a digital image and hence, the printing starts.

The material used here varies as per the requirements. Some materials such as liquid molecules or powder grains being fused together and the desired shape are given. The printed objects are then made to cool and acquire the firm shape. The resulting object is actually the 3D output of the given input.

The history of 3D printing goes back to 1981. Early additive manufacturing equipment and materials were developed in the 1980s. In 1981, Hideo Kodama of Nagoya Municipal Industrial Research Institute invented two additive methods for fabricating three-dimensional plastic models with photo-hardening thermoset polymer, where the UV exposure area is controlled by a mask pattern or a scanning fibre transmitter.

Before the 1700's, the printing works were pretty hard. The person used to type the news, check the contents, spellings and then finalise it to proceed to later typing the same content. The newspaper then was very limited due to this technology.


A latest 2D printer may it be white and black or a colour printer takes an image, process over it to adjust the intensity of the colour to be used and then the printing is done. The printed output looks just as a photocopy of the original image. The company XEROX used to build machines that would allow us to take a photocopy. Later, Xerox was the word used instead of photocopy.



The advantages of a 3D printer are as follows:
1- Speed
2- Low cost
3- Single step Manufacture
4- Complexity and design freedom.
5- Can replace plasters for fractures.
and many more advantages can be found.

The disadvantages of it are as follows:
1- Cost of buying and setting up a 3D printer is very high
2- 3D printed objects may require heavy-duty post-processing
3-  Large-scale adoption of 3D printing will result in significant job loss
4- The manufacturing of illegal weapons would give way to black markets.

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