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The Science Behind 3D printing

The technology that makes 3D  printing possible has roots in an experiment that led to the development of photography 200 years ago. Scientists realise that certain materials would undergo chemical changes in exposure to light.

 one common method of 3D printing called stereolithography was First  developed in the 1980s. it creates object by exposing light sensitive polymers ,Called photopolymers, ultraviolet from laser .Photo polymers cat as a combination of several substance: molecule that maybe and acrylic or form of plastics a small molecule to keep the mixture in an initial liquid state; and photo  initiator  that, when exposed to light off the light wavelength, cause the other two substance to bind into a solid form

 A  vat Of this substance is placed on a movable tray inside a printer and then a computer guided UV  laser traces a thin layer  of the substance. down for the photopolymer. is a full object.

 Fast Fact 

 3D printed prosthetics can be customised to fit the wearer body and may eventually be cheaper and more durable than traditional prosthetics. Combined with Advance in robotics .these limbs could even move  with the impulses from wearees nerves.

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