A U.S. company invents a bio-printer that can print living 3D organs. Also in the U.S., a company recently using the 3D printing technology successfully creates the semi-automatic rifle magazines and other components of the AR-15. The drawings of 3D printing pistol have been downloaded more than 100,000 times.
Some small 3D printers can already buy home. But are the printers really suitable for ordinary people to use? Or even print at home? Things seem not so simple. According to the study of University of Illinois, printing in non-ventilated places may cause health problems.
3D printers first heat plastic and then ejected through a nozzle, creating the design model. This process is similar to the industrial production, and will release toxic substances. But users at home generally do not use protective equipments. Particles floating in the air are easy to be inhaled into the lungs or the brain, accumulation in the organs may lead to lung disease, blood and nervous system diseases, and even lead to death. The researchers suggest that people should be cautious about the use.
But there are different opinions over the issue. Ru Fang-Jun, CEO of a Chinese company, said that only a laser-sintering machine comes with the problem, and that machine is not affordable for the average family. Household equipments don’t have such problems, for the household printers are nothing more than the solid plastic melting, and the process do not involve the powder.
3D printing release ultrafine particles and maybe carcinogenic, the household type contains no particles
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