The standard forming size is 355*254*254 mm, which can be upgraded to 406*356*406 mm. At the same time, the material box is also upgraded from two boxes to four boxes (two boxes of manufacturing materials, two boxes of supporting materials), with larger manufacturing space and more material boxes, which enables users to make larger parts. When the first box of material is used up, the automatic feeding mechanism automatically feeds the second box of material and makes it uninterrupted without manual feeding, which can realize long-term unattended.