About this 3D model

If you want the base to rotate, you need 1 bearing with an inner diameter of 10mm, an outer diameter of 30mm, and a thickness of 9mm. Other small parts need to be assembled with glue 如果想要底座可以旋转，需要1个轴承，内径10mm，外径30mm，厚度9mm。其它小的部件有用到胶水组装