3D Printing Technology
It’s already here. 3D printing, also known as additive manufacturing (AM), refers to processes used to synthesize a three-dimensionalobject in which 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 such as an Additive Manufacturing File (AMF) file.  The definition looks complicated, actually it’s very easy for us to discern when we see it.
Nowadays, 3D printing is used in jewelry, footwear, industrial design, building, engineering, automobile, aerospace enterprise, dentistry, medical industry, education, gun and other field. On one hand, 3D printing technology promotes innovation. It is very useful and helpful for our life. For example, Sportswear company Nike used 3D printing technology in football shoes, and support better experience for football athletes. Nike accelerated the footwear manufacturing process through 3D printing technology. Nike has designed a 3D-printed sports bag for players taking part in the FIFA World Cup 2014.The brand claims that the Nike Football Rebento duffle bag is the first world’s first 3D-printed football bag. It has been designed as a sports equipment holder for football players at the 2014 World Cup. It not only light-weight to hold, but also brings comfortable experience. There will be a day, every custom can get such a good product.
On the other hand, if this technology is used in bad field by human it would go great harm. If one gun owner wants to have more guns, he can print his gun. Using 3D printing can print different dangerous goods. We should act now to give law enforcement authorities the power to stop the development of these weapons before terrorists and criminals can easily bring them on planes.  We need to keep ahead of the technology and we must have a new law to control 3D printing before we use it.
Innovation is a key for future. 3D printing technology will develop rapidly, so we have to find a way to control it.
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