3D printing has always been a new technology that is not lacking in topics. According to Fox News, a mechanical engineering student has designed and successfully printed a revolver that can be automatically loaded in 3D. Most of the parts of this pistol are printed in 3D and are considered to be the world's first 3D printed revolver that can be automatically loaded. The revolver, called the PM522 Washbear, can fire up to eight rounds of bullets, which can be printed on a regular consumer-grade 3D printer . Most of its components are printed from ABS engineering plastics or nylon materials, but in order to comply with the regulations on gun management, there are also some metal parts that can be detected, such as springs, metal strikers and steel bars. The student is said to be James Patrick, who has been developing the 3D printed revolver for several months, but it was not until this week that he made it public. The pistol can support 6 or 8 rounds of bombs, the 6 version uses a more durable nylon material, and the 8 version uses ABS material plus steel bushings for strength. Both bomb compartments can be placed in the same gun frame, so the two can be interchanged. Two years ago, the world's first 3D printing pistol came out. In order to test the security system at that time, two reporters from the "Sunday Post" in the UK carried their own 3D printed plastic pistols during the peak traffic hours and successfully passed the security check at St. Pancras Railway Station in London, bringing them " Eurostar" train. A major discussion about 3D printing technology and gun safety was subsequently launched in various countries. Although the design document for the pistol named "The Liberator" was urgently removed in less than three days on the Internet, its downloads still exceeded 100,000. 3 Ply Toilet Paper Baoda Paper Enterprise Co., Ltd. , https://www.baodatissue.com