| 摘要 |
The present invention relates to a multi-stage case of a fused deposition modeling (FDM) or fused filament fabrication (FFF)-type 3D printer. The multi-stage case enables a user to effectively stack and use three or more materials (filaments). According to the present invention, the materials for the 3D printer are arranged on two stages or more to prevent a material supplying hole from being interfered. |
