Biomedical Engineer and Material Science Engineer. Designer and 3D-Printing，

Yongxiao has has been in contact with mentor frequently. Because he is in charge of the holder redesign, he has to go to the laboratory to measure the dimension and do the printing for many iterations. Because some minor error in the dimension will result in the failure of whole holder, he has to be very careful of the designing process. The 3-D printer in the laboratory is not perfect. Sometimes the extruder of the printer will stop outputting filament but the printer will continue working. Thus Yongxiao has to stay beside the printer and watch the printer working for at least half an hour. The 3-D printing is also time consuming, and usually the printer needs to print overnight to finish one iteration.